20157104447700 has 144 divisors (see below), whose sum is σ = 63924685224960. Its totient is φ = 4863411504000.

The previous prime is 20157104447687. The next prime is 20157104447707. The reversal of 20157104447700 is 774440175102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20157104447707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13778140 + ... + 15170739.

Almost surely, 2^{20157104447700} is an apocalyptic number.

20157104447700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20157104447700 is an abundant number, since it is smaller than the sum of its proper divisors (43767580777260).

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

20157104447700 is a wasteful number, since it uses less digits than its factorization.

20157104447700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28949118 (or 28949111 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 42.

The spelling of 20157104447700 in words is "twenty trillion, one hundred fifty-seven billion, one hundred four million, four hundred forty-seven thousand, seven hundred".