50781157504 has 256 divisors, whose sum is σ = 134307072000. Its totient is φ = 18515312640.

The previous prime is 50781157457. The next prime is 50781157507. The reversal of 50781157504 is 40575118705.

It is not an unprimeable number, because it can be changed into a prime (50781157507) 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, 33342087 + ... + 33343609.

It is an arithmetic number, because the mean of its divisors is an integer number (524637000).

Almost surely, 2^50781157504 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 50781157504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67153536000).

50781157504 is an abundant number, since it is smaller than the sum of its proper divisors (83525914496).

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

50781157504 is a wasteful number, since it uses less digits than its factorization.

50781157504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 43.

The spelling of 50781157504 in words is "fifty billion, seven hundred eighty-one million, one hundred fifty-seven thousand, five hundred four".