90946140021 has 24 divisors (see below), whose sum is σ = 144029246400. Its totient is φ = 54841881600.

The previous prime is 90946140007. The next prime is 90946140029. The reversal of 90946140021 is 12004164909.

It is a happy number.

90946140021 is a `hidden beast` number, since 90 + 94 + 61 + 400 + 21 = 666.

It is not a de Polignac number, because 90946140021 - 2¹⁵ = 90946107253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90946140029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2288460 + ... + 2327861.

It is an arithmetic number, because the mean of its divisors is an integer number (6001218600).

Almost surely, 2^90946140021 is an apocalyptic number.

It is an amenable number.

90946140021 is a deficient number, since it is larger than the sum of its proper divisors (53083106379).

90946140021 is a wasteful number, since it uses less digits than its factorization.

90946140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4616537 (or 4616534 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 90946140021 in words is "ninety billion, nine hundred forty-six million, one hundred forty thousand, twenty-one".