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9715011601 = 31313387471
BaseRepresentation
bin10010000110000111…
…10101000000010001
3221002001111201112111
421003003311000101
5124344020332401
64244002225321
7462514143661
oct110303650021
927061451474
109715011601
114135964009
121a71655241
13bba947399
1468237a1a1
153bcd66e51
hex2430f5011

9715011601 has 4 divisors (see below), whose sum is σ = 10028399104. Its totient is φ = 9401624100.

The previous prime is 9715011589. The next prime is 9715011611. The reversal of 9715011601 is 1061105179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1061105179 = 1955847641.

It is a cyclic number.

It is not a de Polignac number, because 9715011601 - 213 = 9715003409 is a prime.

It is a super-3 number, since 3×97150116013 (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 313387471 = 9715011601 / (9 + 7 + 1 + 5 + 0 + 1 + 1 + 6 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9715011611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156693705 + ... + 156693766.

It is an arithmetic number, because the mean of its divisors is an integer number (2507099776).

Almost surely, 29715011601 is an apocalyptic number.

9715011601 is the 44080-th centered decagonal number.

It is an amenable number.

9715011601 is a deficient number, since it is larger than the sum of its proper divisors (313387503).

9715011601 is a wasteful number, since it uses less digits than its factorization.

9715011601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313387502.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 9715011601 is about 98564.7584129338. The cubic root of 9715011601 is about 2133.7708337394.

The spelling of 9715011601 in words is "nine billion, seven hundred fifteen million, eleven thousand, six hundred one".

Divisors: 1 31 313387471 9715011601