90929273820 has 96 divisors (see below), whose sum is σ = 317425844736. Its totient is φ = 18894393600.

The previous prime is 90929273819. The next prime is 90929273833. The reversal of 90929273820 is 2837292909.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9836211 + ... + 9845450.

It is an arithmetic number, because the mean of its divisors is an integer number (3306519216).

Almost surely, 2^90929273820 is an apocalyptic number.

It is an amenable number.

90929273820 is an abundant number, since it is smaller than the sum of its proper divisors (226496570916).

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

90929273820 is a wasteful number, since it uses less digits than its factorization.

90929273820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19681691 (or 19681689 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 90929273820 in words is "ninety billion, nine hundred twenty-nine million, two hundred seventy-three thousand, eight hundred twenty".