50861357568 has 640 divisors, whose sum is σ = 179885629440. Its totient is φ = 13888143360.

The previous prime is 50861357563. The next prime is 50861357611. The reversal of 50861357568 is 86575316805.

50861357568 is a `hidden beast` number, since 5 + 0 + 8 + 6 + 1 + 3 + 575 + 68 = 666.

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 (50861357563) 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 63 ways as a sum of consecutive naturals, for example, 241048983 + ... + 241049193.

It is an arithmetic number, because the mean of its divisors is an integer number (281071296).

Almost surely, 2^50861357568 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 50861357568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89942814720).

50861357568 is an abundant number, since it is smaller than the sum of its proper divisors (129024271872).

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

50861357568 is a wasteful number, since it uses less digits than its factorization.

50861357568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 50861357568 in words is "fifty billion, eight hundred sixty-one million, three hundred fifty-seven thousand, five hundred sixty-eight".