91615623107 has 8 divisors (see below), whose sum is σ = 92609477376. Its totient is φ = 90623776392.

The previous prime is 91615623101. The next prime is 91615623133. The reversal of 91615623107 is 70132651619.

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 91615623107 - 2²² = 91611428803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91615623101) 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, 410033 + ... + 592754.

It is an arithmetic number, because the mean of its divisors is an integer number (11576184672).

Almost surely, 2^91615623107 is an apocalyptic number.

91615623107 is a deficient number, since it is larger than the sum of its proper divisors (993854269).

91615623107 is a wasteful number, since it uses less digits than its factorization.

91615623107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003777.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 91615623107 in words is "ninety-one billion, six hundred fifteen million, six hundred twenty-three thousand, one hundred seven".