51236654976 has 192 divisors, whose sum is σ = 164662308720. Its totient is φ = 15765000192.

The previous prime is 51236654947. The next prime is 51236654993. The reversal of 51236654976 is 67945663215.

51236654976 is a `hidden beast` number, since 5 + 1 + 23 + 6 + 6 + 549 + 76 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340996 + ... + 467708.

Almost surely, 2^51236654976 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 51236654976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82331154360).

51236654976 is an abundant number, since it is smaller than the sum of its proper divisors (113425653744).

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

51236654976 is a wasteful number, since it uses less digits than its factorization.

51236654976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126755 (or 126731 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 54.

The spelling of 51236654976 in words is "fifty-one billion, two hundred thirty-six million, six hundred fifty-four thousand, nine hundred seventy-six".