50661131738 has 16 divisors (see below), whose sum is σ = 88037350080. Its totient is φ = 21414489696.

The previous prime is 50661131737. The next prime is 50661131761. The reversal of 50661131738 is 83713116605.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50661131695 and 50661131704.

It is not an unprimeable number, because it can be changed into a prime (50661131737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24784268 + ... + 24786311.

It is an arithmetic number, because the mean of its divisors is an integer number (5502334380).

Almost surely, 2^50661131738 is an apocalyptic number.

50661131738 is a deficient number, since it is larger than the sum of its proper divisors (37376218342).

50661131738 is a wasteful number, since it uses less digits than its factorization.

50661131738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49570661.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 50661131738 in words is "fifty billion, six hundred sixty-one million, one hundred thirty-one thousand, seven hundred thirty-eight".