51331700862 has 80 divisors (see below), whose sum is σ = 125095747392. Its totient is φ = 15637924800.

The previous prime is 51331700851. The next prime is 51331700869. The reversal of 51331700862 is 26800713315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51331700869) 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 39 ways as a sum of consecutive naturals, for example, 92043 + ... + 333369.

Almost surely, 2^51331700862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51331700862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62547873696).

51331700862 is an abundant number, since it is smaller than the sum of its proper divisors (73764046530).

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

51331700862 is a wasteful number, since it uses less digits than its factorization.

51331700862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241455 (or 241446 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 51331700862 in words is "fifty-one billion, three hundred thirty-one million, seven hundred thousand, eight hundred sixty-two".