51613392960 has 336 divisors, whose sum is σ = 183741242880. Its totient is φ = 13284311040.

The previous prime is 51613392937. The next prime is 51613392967. The reversal of 51613392960 is 6929331615.

51613392960 is a `hidden beast` number, since 5 + 1 + 613 + 3 + 9 + 29 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (51613392967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60085011 + ... + 60085869.

Almost surely, 2^51613392960 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 51613392960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91870621440).

51613392960 is an abundant number, since it is smaller than the sum of its proper divisors (132127849920).

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

51613392960 is a wasteful number, since it uses less digits than its factorization.

51613392960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The spelling of 51613392960 in words is "fifty-one billion, six hundred thirteen million, three hundred ninety-two thousand, nine hundred sixty".