50910418878 has 64 divisors (see below), whose sum is σ = 112784486400. Its totient is φ = 15191336160.

The previous prime is 50910418877. The next prime is 50910418883. The reversal of 50910418878 is 87881401905.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50910418878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50910418877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1963225 + ... + 1988987.

It is an arithmetic number, because the mean of its divisors is an integer number (1762257600).

Almost surely, 2^50910418878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50910418878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56392243200).

50910418878 is an abundant number, since it is smaller than the sum of its proper divisors (61874067522).

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

50910418878 is a wasteful number, since it uses less digits than its factorization.

50910418878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26237.

The product of its (nonzero) digits is 645120, while the sum is 51.

The spelling of 50910418878 in words is "fifty billion, nine hundred ten million, four hundred eighteen thousand, eight hundred seventy-eight".