50138250018 has 32 divisors (see below), whose sum is σ = 101076498432. Its totient is φ = 16579928400.

The previous prime is 50138250013. The next prime is 50138250031. The reversal of 50138250018 is 81005283105.

It is a happy number.

It is a super-2 number, since 2×50138250018² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50138250011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330055 + ... + 457397.

It is an arithmetic number, because the mean of its divisors is an integer number (3158640576).

Almost surely, 2^50138250018 is an apocalyptic number.

50138250018 is an abundant number, since it is smaller than the sum of its proper divisors (50938248414).

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

50138250018 is a wasteful number, since it uses less digits than its factorization.

50138250018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127870.

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 50138250018 in words is "fifty billion, one hundred thirty-eight million, two hundred fifty thousand, eighteen".