51630802560 has 192 divisors, whose sum is σ = 184039464960. Its totient is φ = 13324032000.

The previous prime is 51630802549. The next prime is 51630802567. The reversal of 51630802560 is 6520803615.

51630802560 is a `hidden beast` number, since 5 + 16 + 3 + 0 + 80 + 2 + 560 = 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 (36).

It is not an unprimeable number, because it can be changed into a prime (51630802567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33985 + ... + 323135.

It is an arithmetic number, because the mean of its divisors is an integer number (958538880).

Almost surely, 2^51630802560 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 51630802560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92019732480).

51630802560 is an abundant number, since it is smaller than the sum of its proper divisors (132408662400).

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

51630802560 is a wasteful number, since it uses less digits than its factorization.

51630802560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289207 (or 289192 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 51630802560 in words is "fifty-one billion, six hundred thirty million, eight hundred two thousand, five hundred sixty".