20352541555751 has 16 divisors (see below), whose sum is σ = 20482861246848. Its totient is φ = 20222425036800.

The previous prime is 20352541555693. The next prime is 20352541555817. The reversal of 20352541555751 is 15755514525302.

It is a cyclic number.

It is not a de Polignac number, because 20352541555751 - 2³⁸ = 20077663648807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20352541555751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352541555351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1999065881 + ... + 1999076061.

It is an arithmetic number, because the mean of its divisors is an integer number (1280178827928).

Almost surely, 2^{20352541555751} is an apocalyptic number.

20352541555751 is a deficient number, since it is larger than the sum of its proper divisors (130319691097).

20352541555751 is a wasteful number, since it uses less digits than its factorization.

20352541555751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18922.

The product of its (nonzero) digits is 5250000, while the sum is 50.

The spelling of 20352541555751 in words is "twenty trillion, three hundred fifty-two billion, five hundred forty-one million, five hundred fifty-five thousand, seven hundred fifty-one".