50639851089 has 9 divisors (see below), whose sum is σ = 73147426729. Its totient is φ = 33759450660.

The previous prime is 50639851081. The next prime is 50639851103. The reversal of 50639851089 is 98015893605.

It is a happy number.

The square root of 50639851089 is 225033.

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

50639851089 is a `hidden beast` number, since 506 + 3 + 9 + 8 + 51 + 0 + 89 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 50639851089 - 2³ = 50639851081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50639851081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 637594 + ... + 712604.

Almost surely, 2^50639851089 is an apocalyptic number.

50639851089 is the 225033-rd square number.

50639851089 is the 112517-th centered octagonal number.

It is an amenable number.

50639851089 is a deficient number, since it is larger than the sum of its proper divisors (22507575640).

50639851089 is an frugal number, since it uses more digits than its factorization.

50639851089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150028 (or 75014 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 50639851089 in words is "fifty billion, six hundred thirty-nine million, eight hundred fifty-one thousand, eighty-nine".