90785674540 has 48 divisors (see below), whose sum is σ = 208178286624. Its totient is φ = 32981772800.

The previous prime is 90785674531. The next prime is 90785674607. The reversal of 90785674540 is 4547658709.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38952 + ... + 427888.

It is an arithmetic number, because the mean of its divisors is an integer number (4337047638).

Almost surely, 2^90785674540 is an apocalyptic number.

It is an amenable number.

90785674540 is an abundant number, since it is smaller than the sum of its proper divisors (117392612084).

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

90785674540 is a wasteful number, since it uses less digits than its factorization.

90785674540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390018 (or 390016 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 90785674540 in words is "ninety billion, seven hundred eighty-five million, six hundred seventy-four thousand, five hundred forty".