50787039864 has 128 divisors (see below), whose sum is σ = 146902740480. Its totient is φ = 14479449600.

The previous prime is 50787039859. The next prime is 50787039911. The reversal of 50787039864 is 46893078705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301834 + ... + 438950.

It is an arithmetic number, because the mean of its divisors is an integer number (1147677660).

Almost surely, 2^50787039864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50787039864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73451370240).

50787039864 is an abundant number, since it is smaller than the sum of its proper divisors (96115700616).

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

50787039864 is a wasteful number, since it uses less digits than its factorization.

50787039864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137221 (or 137217 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 50787039864 in words is "fifty billion, seven hundred eighty-seven million, thirty-nine thousand, eight hundred sixty-four".