50564258640 has 320 divisors, whose sum is σ = 200373841920. Its totient is φ = 11480486400.

The previous prime is 50564258639. The next prime is 50564258651. The reversal of 50564258640 is 4685246505.

50564258640 is a `hidden beast` number, since 5 + 0 + 5 + 64 + 2 + 586 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2272047 + ... + 2294193.

It is an arithmetic number, because the mean of its divisors is an integer number (626168256).

Almost surely, 2^50564258640 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 50564258640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100186920960).

50564258640 is an abundant number, since it is smaller than the sum of its proper divisors (149809583280).

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

50564258640 is a wasteful number, since it uses less digits than its factorization.

50564258640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22327 (or 22315 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 50564258640 in words is "fifty billion, five hundred sixty-four million, two hundred fifty-eight thousand, six hundred forty".