50640770688 has 256 divisors, whose sum is σ = 152108928000. Its totient is φ = 14842920960.

The previous prime is 50640770683. The next prime is 50640770689. The reversal of 50640770688 is 88607704605.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 50640770688.

It is not an unprimeable number, because it can be changed into a prime (50640770683) 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 31 ways as a sum of consecutive naturals, for example, 5864358 + ... + 5872986.

It is an arithmetic number, because the mean of its divisors is an integer number (594175500).

Almost surely, 2^50640770688 is an apocalyptic number.

50640770688 is a gapful number since it is divisible by the number (58) 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 50640770688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76054464000).

50640770688 is an abundant number, since it is smaller than the sum of its proper divisors (101468157312).

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

50640770688 is a wasteful number, since it uses less digits than its factorization.

50640770688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8723 (or 8711 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 50640770688 in words is "fifty billion, six hundred forty million, seven hundred seventy thousand, six hundred eighty-eight".