51633243360 has 72 divisors (see below), whose sum is σ = 176198447880. Its totient is φ = 13768864512.

The previous prime is 51633243313. The next prime is 51633243397. The reversal of 51633243360 is 6334233615.

51633243360 is a `hidden beast` number, since 5 + 163 + 3 + 2 + 433 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17926770 + ... + 17929649.

It is an arithmetic number, because the mean of its divisors is an integer number (2447200665).

Almost surely, 2^51633243360 is an apocalyptic number.

It is an amenable number.

51633243360 is an abundant number, since it is smaller than the sum of its proper divisors (124565204520).

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

51633243360 is a wasteful number, since it uses less digits than its factorization.

51633243360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35856440 (or 35856429 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

Adding to 51633243360 its reverse (6334233615), we get a palindrome (57967476975).

The spelling of 51633243360 in words is "fifty-one billion, six hundred thirty-three million, two hundred forty-three thousand, three hundred sixty".