93091654640 has 20 divisors (see below), whose sum is σ = 216438097224. Its totient is φ = 37236661824.

The previous prime is 93091654633. The next prime is 93091654661. The reversal of 93091654640 is 4645619039.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×93091654640² (a number of 23 digits) contains 22 as substring.

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, 581822762 + ... + 581822921.

Almost surely, 2^93091654640 is an apocalyptic number.

It is an amenable number.

93091654640 is an abundant number, since it is smaller than the sum of its proper divisors (123346442584).

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

93091654640 is a wasteful number, since it uses less digits than its factorization.

93091654640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163645696 (or 1163645690 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 93091654640 in words is "ninety-three billion, ninety-one million, six hundred fifty-four thousand, six hundred forty".