50439666816 has 1280 divisors, whose sum is σ = 203032811520. Its totient is φ = 12043468800.

The previous prime is 50439666787. The next prime is 50439666817. The reversal of 50439666816 is 61866693405.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (50439666817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 752830815 + ... + 752830881.

It is an arithmetic number, because the mean of its divisors is an integer number (158619384).

Almost surely, 2^50439666816 is an apocalyptic number.

50439666816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50439666816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101516405760).

50439666816 is an abundant number, since it is smaller than the sum of its proper divisors (152593144704).

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

50439666816 is a wasteful number, since it uses less digits than its factorization.

50439666816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 50439666816 in words is "fifty billion, four hundred thirty-nine million, six hundred sixty-six thousand, eight hundred sixteen".