91713647105 has 8 divisors (see below), whose sum is σ = 111921739200. Its totient is φ = 72127342576.

The previous prime is 91713647087. The next prime is 91713647107. The reversal of 91713647105 is 50174631719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91713647105 - 2³⁴ = 74533777921 is a prime.

It is a super-2 number, since 2×91713647105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91713647107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155446565 + ... + 155447154.

It is an arithmetic number, because the mean of its divisors is an integer number (13990217400).

Almost surely, 2^91713647105 is an apocalyptic number.

It is an amenable number.

91713647105 is a deficient number, since it is larger than the sum of its proper divisors (20208092095).

91713647105 is a wasteful number, since it uses less digits than its factorization.

91713647105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310893783.

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 91713647105 in words is "ninety-one billion, seven hundred thirteen million, six hundred forty-seven thousand, one hundred five".