50661906724 has 81 divisors (see below), whose sum is σ = 105658008561. Its totient is φ = 21229734240.

The previous prime is 50661906719. The next prime is 50661906809. The reversal of 50661906724 is 42760916605.

The square root of 50661906724 is 225082.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7494364900 + 43167541824 = 86570^2 + 207768^2 .

It is a super-2 number, since 2×50661906724² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 64373059 + ... + 64373845.

Almost surely, 2^50661906724 is an apocalyptic number.

50661906724 is the 225082-nd square number.

It is an amenable number.

50661906724 is an abundant number, since it is smaller than the sum of its proper divisors (54996101837).

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

50661906724 is a wasteful number, since it uses less digits than its factorization.

50661906724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 50661906724 in words is "fifty billion, six hundred sixty-one million, nine hundred six thousand, seven hundred twenty-four".