90971935712 has 48 divisors (see below), whose sum is σ = 216727267680. Its totient is φ = 36694560768.

The previous prime is 90971935693. The next prime is 90971935721. The reversal of 90971935712 is 21753917909.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11941037 + ... + 11948652.

It is an arithmetic number, because the mean of its divisors is an integer number (4515151410).

Almost surely, 2^90971935712 is an apocalyptic number.

It is an amenable number.

90971935712 is an abundant number, since it is smaller than the sum of its proper divisors (125755331968).

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

90971935712 is a wasteful number, since it uses less digits than its factorization.

90971935712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23889723 (or 23889715 counting only the distinct ones).

The product of its (nonzero) digits is 1071630, while the sum is 53.

The spelling of 90971935712 in words is "ninety billion, nine hundred seventy-one million, nine hundred thirty-five thousand, seven hundred twelve".