51846862656 has 224 divisors, whose sum is σ = 143843166720. Its totient is φ = 16467204096.

The previous prime is 51846862643. The next prime is 51846862663. The reversal of 51846862656 is 65626864815.

It is a junction number, because it is equal to n+sod(n) for n = 51846862596 and 51846862605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79397626 + ... + 79398278.

Almost surely, 2^51846862656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51846862656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71921583360).

51846862656 is an abundant number, since it is smaller than the sum of its proper divisors (91996304064).

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

51846862656 is a wasteful number, since it uses less digits than its factorization.

51846862656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 923 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 57.

The spelling of 51846862656 in words is "fifty-one billion, eight hundred forty-six million, eight hundred sixty-two thousand, six hundred fifty-six".