20397166372 has 96 divisors (see below), whose sum is σ = 41699266560. Its totient is φ = 8627520000.

The previous prime is 20397166369. The next prime is 20397166411. The reversal of 20397166372 is 27366179302.

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 31 ways as a sum of consecutive naturals, for example, 47324997 + ... + 47325427.

It is an arithmetic number, because the mean of its divisors is an integer number (434367360).

Almost surely, 2^20397166372 is an apocalyptic number.

20397166372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20397166372 is an abundant number, since it is smaller than the sum of its proper divisors (21302100188).

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

20397166372 is a wasteful number, since it uses less digits than its factorization.

20397166372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 20397166372 in words is "twenty billion, three hundred ninety-seven million, one hundred sixty-six thousand, three hundred seventy-two".