20497173876 has 48 divisors (see below), whose sum is σ = 53158049280. Its totient is φ = 6830176320.

The previous prime is 20497173859. The next prime is 20497173883. The reversal of 20497173876 is 67837179402.

20497173876 is a `hidden beast` number, since 2 + 0 + 497 + 1 + 73 + 87 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322621 + ... + 380891.

It is an arithmetic number, because the mean of its divisors is an integer number (1107459360).

Almost surely, 2^20497173876 is an apocalyptic number.

It is an amenable number.

20497173876 is an abundant number, since it is smaller than the sum of its proper divisors (32660875404).

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

20497173876 is a wasteful number, since it uses less digits than its factorization.

20497173876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61541 (or 61533 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 20497173876 in words is "twenty billion, four hundred ninety-seven million, one hundred seventy-three thousand, eight hundred seventy-six".