91645565752 has 16 divisors (see below), whose sum is σ = 185053546440. Its totient is φ = 42297953376.

The previous prime is 91645565747. The next prime is 91645565783. The reversal of 91645565752 is 25756554619.

It is a junction number, because it is equal to n+sod(n) for n = 91645565693 and 91645565702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440603578 + ... + 440603785.

Almost surely, 2^91645565752 is an apocalyptic number.

It is an amenable number.

91645565752 is an abundant number, since it is smaller than the sum of its proper divisors (93407980688).

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

91645565752 is a wasteful number, since it uses less digits than its factorization.

91645565752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881207382 (or 881207378 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 55.

The spelling of 91645565752 in words is "ninety-one billion, six hundred forty-five million, five hundred sixty-five thousand, seven hundred fifty-two".