51232733656 has 32 divisors (see below), whose sum is σ = 105402623760. Its totient is φ = 23199725952.

The previous prime is 51232733653. The next prime is 51232733683. The reversal of 51232733656 is 65633723215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51232733653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4641870 + ... + 4652893.

Almost surely, 2^51232733656 is an apocalyptic number.

It is an amenable number.

51232733656 is an abundant number, since it is smaller than the sum of its proper divisors (54169890104).

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

51232733656 is a wasteful number, since it uses less digits than its factorization.

51232733656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9294835 (or 9294831 counting only the distinct ones).

The product of its digits is 680400, while the sum is 43.

The spelling of 51232733656 in words is "fifty-one billion, two hundred thirty-two million, seven hundred thirty-three thousand, six hundred fifty-six".