20351053176720 has 80 divisors (see below), whose sum is σ = 72100874117760. Its totient is φ = 4651669297152.

The previous prime is 20351053176631. The next prime is 20351053176761. The reversal of 20351053176720 is 2767135015302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 6056859385 + ... + 6056862744.

It is an arithmetic number, because the mean of its divisors is an integer number (901260926472).

Almost surely, 2^{20351053176720} is an apocalyptic number.

20351053176720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20351053176720 is an abundant number, since it is smaller than the sum of its proper divisors (51749820941040).

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

20351053176720 is a wasteful number, since it uses less digits than its factorization.

20351053176720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12113722152 (or 12113722146 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 42.

The spelling of 20351053176720 in words is "twenty trillion, three hundred fifty-one billion, fifty-three million, one hundred seventy-six thousand, seven hundred twenty".