90021396832 has 24 divisors (see below), whose sum is σ = 178950307536. Its totient is φ = 44573699712.

The previous prime is 90021396827. The next prime is 90021396853. The reversal of 90021396832 is 23869312009.

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, 13652863 + ... + 13659454.

It is an arithmetic number, because the mean of its divisors is an integer number (7456262814).

Almost surely, 2^90021396832 is an apocalyptic number.

It is an amenable number.

90021396832 is a deficient number, since it is larger than the sum of its proper divisors (88928910704).

90021396832 is a wasteful number, since it uses less digits than its factorization.

90021396832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27312430 (or 27312422 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 90021396832 in words is "ninety billion, twenty-one million, three hundred ninety-six thousand, eight hundred thirty-two".