50408808138 has 64 divisors (see below), whose sum is σ = 120751948800. Its totient is φ = 15495554880.

The previous prime is 50408808101. The next prime is 50408808143. The reversal of 50408808138 is 83180880405.

50408808138 is a `hidden beast` number, since 504 + 0 + 8 + 8 + 0 + 8 + 138 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 50408808093 and 50408808102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710983 + ... + 778661.

It is an arithmetic number, because the mean of its divisors is an integer number (1886749200).

Almost surely, 2^50408808138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50408808138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60375974400).

50408808138 is an abundant number, since it is smaller than the sum of its proper divisors (70343140662).

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

50408808138 is a wasteful number, since it uses less digits than its factorization.

50408808138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68764 (or 68758 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 50408808138 in words is "fifty billion, four hundred eight million, eight hundred eight thousand, one hundred thirty-eight".