90666370502 has 16 divisors (see below), whose sum is σ = 139683972912. Its totient is φ = 44105199840.

The previous prime is 90666370481. The next prime is 90666370513. The reversal of 90666370502 is 20507366609.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1646873 + ... + 1701035.

It is an arithmetic number, because the mean of its divisors is an integer number (8730248307).

Almost surely, 2^90666370502 is an apocalyptic number.

90666370502 is a deficient number, since it is larger than the sum of its proper divisors (49017602410).

90666370502 is a wasteful number, since it uses less digits than its factorization.

90666370502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76823.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 90666370502 in words is "ninety billion, six hundred sixty-six million, three hundred seventy thousand, five hundred two".