20637518758332 has 48 divisors (see below), whose sum is σ = 55033620552960. Its totient is φ = 5896408516992.

The previous prime is 20637518758301. The next prime is 20637518758343. The reversal of 20637518758332 is 23385781573602.

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, 28482519 + ... + 29198097.

It is an arithmetic number, because the mean of its divisors is an integer number (1146533761520).

Almost surely, 2^{20637518758332} is an apocalyptic number.

It is an amenable number.

20637518758332 is an abundant number, since it is smaller than the sum of its proper divisors (34396101794628).

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

20637518758332 is a wasteful number, since it uses less digits than its factorization.

20637518758332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058930 (or 1058928 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 60.

The spelling of 20637518758332 in words is "twenty trillion, six hundred thirty-seven billion, five hundred eighteen million, seven hundred fifty-eight thousand, three hundred thirty-two".