20832972180 has 48 divisors (see below), whose sum is σ = 61402447680. Its totient is φ = 5263066368.

The previous prime is 20832972163. The next prime is 20832972197. The reversal of 20832972180 is 8127923802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20832972163) and next prime (20832972197).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9136129 + ... + 9138408.

It is an arithmetic number, because the mean of its divisors is an integer number (1279217660).

Almost surely, 2^20832972180 is an apocalyptic number.

20832972180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20832972180 is an abundant number, since it is smaller than the sum of its proper divisors (40569475500).

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

20832972180 is a wasteful number, since it uses less digits than its factorization.

20832972180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18274568 (or 18274566 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 20832972180 in words is "twenty billion, eight hundred thirty-two million, nine hundred seventy-two thousand, one hundred eighty".