50278909440 has 80 divisors (see below), whose sum is σ = 160735413168. Its totient is φ = 13407707136.

The previous prime is 50278909433. The next prime is 50278909441. The reversal of 50278909440 is 4490987205.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×50278909440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 50278909440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50278909441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265687 + ... + 3281046.

Almost surely, 2^50278909440 is an apocalyptic number.

It is an amenable number.

50278909440 is an abundant number, since it is smaller than the sum of its proper divisors (110456503728).

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

50278909440 is an equidigital number, since it uses as much as digits as its factorization.

50278909440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6546759 (or 6546743 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 50278909440 in words is "fifty billion, two hundred seventy-eight million, nine hundred nine thousand, four hundred forty".