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30287968544297 = 73414903678689
BaseRepresentation
bin1101110001011111101111…
…00110110010011000101001
310222020111112121022111202202
412320233313212302120221
512432214224421404142
6144230033424305545
76244143044544332
oct670576746623051
9128214477274682
1030287968544297
119718067701632
1234920174722b5
1313b91b27418a9
14769d34643289
15377cd60a2032
hex1b8bf79b2629

30287968544297 has 4 divisors (see below), whose sum is σ = 30702872223060. Its totient is φ = 29873064865536.

The previous prime is 30287968544257. The next prime is 30287968544299. The reversal of 30287968544297 is 79244586978203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7584163492096 + 22703805052201 = 2753936^2 + 4764851^2 .

It is a cyclic number.

It is not a de Polignac number, because 30287968544297 - 214 = 30287968527913 is a prime.

It is a super-3 number, since 3×302879685442973 (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30287968544299) 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, 207451839272 + ... + 207451839417.

It is an arithmetic number, because the mean of its divisors is an integer number (7675718055765).

Almost surely, 230287968544297 is an apocalyptic number.

It is an amenable number.

30287968544297 is a deficient number, since it is larger than the sum of its proper divisors (414903678763).

30287968544297 is an equidigital number, since it uses as much as digits as its factorization.

30287968544297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414903678762.

The product of its (nonzero) digits is 1463132160, while the sum is 74.

The spelling of 30287968544297 in words is "thirty trillion, two hundred eighty-seven billion, nine hundred sixty-eight million, five hundred forty-four thousand, two hundred ninety-seven".

Divisors: 1 73 414903678689 30287968544297