50662725138 has 24 divisors (see below), whose sum is σ = 113554385100. Its totient is φ = 16305244704.

The previous prime is 50662725137. The next prime is 50662725187. The reversal of 50662725138 is 83152726605.

50662725138 is a `hidden beast` number, since 5 + 0 + 6 + 62 + 72 + 513 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49242716649 + 1420008489 = 221907^2 + 37683^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50662725093 and 50662725102.

It is not an unprimeable number, because it can be changed into a prime (50662725131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48526993 + ... + 48528036.

Almost surely, 2^50662725138 is an apocalyptic number.

50662725138 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

50662725138 is an abundant number, since it is smaller than the sum of its proper divisors (62891659962).

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

50662725138 is a wasteful number, since it uses less digits than its factorization.

50662725138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97055066 (or 97055063 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 50662725138 in words is "fifty billion, six hundred sixty-two million, seven hundred twenty-five thousand, one hundred thirty-eight".