91937625689 has 8 divisors (see below), whose sum is σ = 113154000960. Its totient is φ = 72741857616.

The previous prime is 91937625683. The next prime is 91937625697. The reversal of 91937625689 is 98652673919.

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 91937625689 - 2¹⁶ = 91937560153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91937625683) 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, 505151699 + ... + 505151880.

It is an arithmetic number, because the mean of its divisors is an integer number (14144250120).

Almost surely, 2^91937625689 is an apocalyptic number.

It is an amenable number.

91937625689 is a deficient number, since it is larger than the sum of its proper divisors (21216375271).

91937625689 is a wasteful number, since it uses less digits than its factorization.

91937625689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010303599.

The product of its digits is 44089920, while the sum is 65.

The spelling of 91937625689 in words is "ninety-one billion, nine hundred thirty-seven million, six hundred twenty-five thousand, six hundred eighty-nine".