20345757756732 has 72 divisors (see below), whose sum is σ = 51935601109392. Its totient is φ = 6715514131200.

The previous prime is 20345757756721. The next prime is 20345757756767. The reversal of 20345757756732 is 23765775754302.

20345757756732 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 7 + 577 + 56 + 7 + 3 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20345757756732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5301769 + ... + 8294592.

It is an arithmetic number, because the mean of its divisors is an integer number (721327793186).

Almost surely, 2^{20345757756732} is an apocalyptic number.

It is an amenable number.

20345757756732 is an abundant number, since it is smaller than the sum of its proper divisors (31589843352660).

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

20345757756732 is a wasteful number, since it uses less digits than its factorization.

20345757756732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13596779 (or 13596774 counting only the distinct ones).

The product of its (nonzero) digits is 259308000, while the sum is 63.

The spelling of 20345757756732 in words is "twenty trillion, three hundred forty-five billion, seven hundred fifty-seven million, seven hundred fifty-six thousand, seven hundred thirty-two".