20171876472 has 80 divisors (see below), whose sum is σ = 61636311000. Its totient is φ = 6112687680.

The previous prime is 20171876443. The next prime is 20171876497. The reversal of 20171876472 is 27467817102.

20171876472 is a `hidden beast` number, since 2 + 0 + 171 + 8 + 7 + 6 + 472 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1407847 + ... + 1422102.

Almost surely, 2^20171876472 is an apocalyptic number.

20171876472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20171876472 is an abundant number, since it is smaller than the sum of its proper divisors (41464434528).

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

20171876472 is a wasteful number, since it uses less digits than its factorization.

20171876472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829978 (or 2829965 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 20171876472 in words is "twenty billion, one hundred seventy-one million, eight hundred seventy-six thousand, four hundred seventy-two".