90688973982 has 16 divisors (see below), whose sum is σ = 181769698560. Its totient is φ = 30164366232.

The previous prime is 90688973909. The next prime is 90688973983. The reversal of 90688973982 is 28937988609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90688973983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16319932 + ... + 16325487.

It is an arithmetic number, because the mean of its divisors is an integer number (11360606160).

Almost surely, 2^90688973982 is an apocalyptic number.

90688973982 is an abundant number, since it is smaller than the sum of its proper divisors (91080724578).

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

90688973982 is a wasteful number, since it uses less digits than its factorization.

90688973982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32645887.

The product of its (nonzero) digits is 94058496, while the sum is 69.

The spelling of 90688973982 in words is "ninety billion, six hundred eighty-eight million, nine hundred seventy-three thousand, nine hundred eighty-two".