90768377906 has 16 divisors (see below), whose sum is σ = 136308844224. Its totient is φ = 45332125104.

The previous prime is 90768377891. The next prime is 90768377941. The reversal of 90768377906 is 60977386709.

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, 9907880 + ... + 9917036.

It is an arithmetic number, because the mean of its divisors is an integer number (8519302764).

Almost surely, 2^90768377906 is an apocalyptic number.

90768377906 is a deficient number, since it is larger than the sum of its proper divisors (45540466318).

90768377906 is a wasteful number, since it uses less digits than its factorization.

90768377906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14305.

The product of its (nonzero) digits is 24004512, while the sum is 62.

It can be divided in two parts, 907683 and 77906, that added together give a palindrome (985589).

The spelling of 90768377906 in words is "ninety billion, seven hundred sixty-eight million, three hundred seventy-seven thousand, nine hundred six".