91377680922 has 48 divisors (see below), whose sum is σ = 216227524032. Its totient is φ = 27658935360.

The previous prime is 91377680767. The next prime is 91377680929. The reversal of 91377680922 is 22908677319.

It is not an unprimeable number, because it can be changed into a prime (91377680929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84523 + ... + 435774.

It is an arithmetic number, because the mean of its divisors is an integer number (4504740084).

Almost surely, 2^91377680922 is an apocalyptic number.

91377680922 is an abundant number, since it is smaller than the sum of its proper divisors (124849843110).

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

91377680922 is a wasteful number, since it uses less digits than its factorization.

91377680922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521203 (or 521200 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 91377680922 in words is "ninety-one billion, three hundred seventy-seven million, six hundred eighty thousand, nine hundred twenty-two".