90700139772 has 108 divisors (see below), whose sum is σ = 261341240888. Its totient is φ = 27484855200.

The previous prime is 90700139737. The next prime is 90700139801. The reversal of 90700139772 is 27793100709.

It is a tau number, because it is divible by the number of its divisors (108).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 267979 + ... + 503202.

Almost surely, 2^90700139772 is an apocalyptic number.

It is an amenable number.

90700139772 is an abundant number, since it is smaller than the sum of its proper divisors (170641101116).

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

90700139772 is a wasteful number, since it uses less digits than its factorization.

90700139772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771222 (or 771197 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The spelling of 90700139772 in words is "ninety billion, seven hundred million, one hundred thirty-nine thousand, seven hundred seventy-two".