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71752070417 = 145194941943
BaseRepresentation
bin100001011010011000…
…0011011010100010001
320212012112011211122112
41002310300123110101
52133422012223132
652543515515105
75120040351446
oct1026460332421
9225175154575
1071752070417
112848019a555
1211aa5758a95
1369c6425801
1436895b39cd
151cee34cab2
hex10b4c1b511

71752070417 has 4 divisors (see below), whose sum is σ = 71757026880. Its totient is φ = 71747113956.

The previous prime is 71752070407. The next prime is 71752070419. The reversal of 71752070417 is 71407025717.

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: 71407025717 = 229311821073.

It is a cyclic number.

It is not a de Polignac number, because 71752070417 - 28 = 71752070161 is a prime.

It is a super-2 number, since 2×717520704172 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71752070419) 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, 2456453 + ... + 2485490.

It is an arithmetic number, because the mean of its divisors is an integer number (17939256720).

Almost surely, 271752070417 is an apocalyptic number.

It is an amenable number.

71752070417 is a deficient number, since it is larger than the sum of its proper divisors (4956463).

71752070417 is a wasteful number, since it uses less digits than its factorization.

71752070417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956462.

The product of its (nonzero) digits is 96040, while the sum is 41.

The spelling of 71752070417 in words is "seventy-one billion, seven hundred fifty-two million, seventy thousand, four hundred seventeen".

Divisors: 1 14519 4941943 71752070417