51017120676 has 120 divisors (see below), whose sum is σ = 134158945536. Its totient is φ = 16905335040.

The previous prime is 51017120633. The next prime is 51017120689. The reversal of 51017120676 is 67602171015.

51017120676 is a `hidden beast` number, since 510 + 1 + 71 + 2 + 0 + 6 + 76 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51017120676.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 57907756 + ... + 57908636.

Almost surely, 2^51017120676 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 51017120676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67079472768).

51017120676 is an abundant number, since it is smaller than the sum of its proper divisors (83141824860).

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

51017120676 is a wasteful number, since it uses less digits than its factorization.

51017120676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 51017120676 in words is "fifty-one billion, seventeen million, one hundred twenty thousand, six hundred seventy-six".