50661436320 has 432 divisors, whose sum is σ = 195377730912. Its totient is φ = 11854940160.

The previous prime is 50661436307. The next prime is 50661436339. The reversal of 50661436320 is 2363416605.

50661436320 is a `hidden beast` number, since 5 + 0 + 6 + 6 + 14 + 3 + 632 + 0 = 666.

It is a super-2 number, since 2×50661436320² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13319539 + ... + 13323341.

It is an arithmetic number, because the mean of its divisors is an integer number (452263266).

Almost surely, 2^50661436320 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 50661436320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97688865456).

50661436320 is an abundant number, since it is smaller than the sum of its proper divisors (144716294592).

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

50661436320 is a wasteful number, since it uses less digits than its factorization.

50661436320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893 (or 3853 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 50661436320 in words is "fifty billion, six hundred sixty-one million, four hundred thirty-six thousand, three hundred twenty".