90977416638 has 16 divisors (see below), whose sum is σ = 181961043600. Its totient is φ = 30324770496.

The previous prime is 90977416591. The next prime is 90977416657. The reversal of 90977416638 is 83661477909.

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, 56113 + ... + 430236.

It is an arithmetic number, because the mean of its divisors is an integer number (11372565225).

Almost surely, 2^90977416638 is an apocalyptic number.

90977416638 is an abundant number, since it is smaller than the sum of its proper divisors (90983626962).

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

90977416638 is a wasteful number, since it uses less digits than its factorization.

90977416638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517531.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 90977416638 in words is "ninety billion, nine hundred seventy-seven million, four hundred sixteen thousand, six hundred thirty-eight".