91925837688 has 64 divisors (see below), whose sum is σ = 238777812000. Its totient is φ = 29456082432.

The previous prime is 91925837657. The next prime is 91925837699. The reversal of 91925837688 is 88673852919.

It is a happy number.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128995 + ... + 447762.

Almost surely, 2^91925837688 is an apocalyptic number.

It is an amenable number.

91925837688 is an abundant number, since it is smaller than the sum of its proper divisors (146851974312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91925837688 is a wasteful number, since it uses less digits than its factorization.

91925837688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577024 (or 577020 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 66.

The spelling of 91925837688 in words is "ninety-one billion, nine hundred twenty-five million, eight hundred thirty-seven thousand, six hundred eighty-eight".