51203655543232 has 28 divisors (see below), whose sum is σ = 106024960665936. Its totient is φ = 24488704824320.

The previous prime is 51203655543199. The next prime is 51203655543233. The reversal of 51203655543232 is 23234555630215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51203655543233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17392544569 + ... + 17392547512.

Almost surely, 2^{51203655543232} is an apocalyptic number.

It is an amenable number.

51203655543232 is an abundant number, since it is smaller than the sum of its proper divisors (54821305122704).

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

51203655543232 is a wasteful number, since it uses less digits than its factorization.

51203655543232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34785092116 (or 34785092106 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 46.

The spelling of 51203655543232 in words is "fifty-one trillion, two hundred three billion, six hundred fifty-five million, five hundred forty-three thousand, two hundred thirty-two".