51995074560 has 672 divisors, whose sum is σ = 197673346080. Its totient is φ = 11592007680.

The previous prime is 51995074553. The next prime is 51995074561. The reversal of 51995074560 is 6547059915.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51995074561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193290106 + ... + 193290374.

It is an arithmetic number, because the mean of its divisors is an integer number (294156765).

Almost surely, 2^51995074560 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 51995074560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98836673040).

51995074560 is an abundant number, since it is smaller than the sum of its proper divisors (145678271520).

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

51995074560 is a wasteful number, since it uses less digits than its factorization.

51995074560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 51995074560 in words is "fifty-one billion, nine hundred ninety-five million, seventy-four thousand, five hundred sixty".