50129811522 has 150 divisors (see below), whose sum is σ = 131407466883. Its totient is φ = 14282906904.

The previous prime is 50129811499. The next prime is 50129811533. The reversal of 50129811522 is 22511892105.

50129811522 is a `hidden beast` number, since 5 + 0 + 129 + 8 + 1 + 1 + 522 = 666.

50129811522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 25064905761 + 25064905761 = 158319^2 + 158319^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=158319.

It is an unprimeable number.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 139637179 + ... + 139637537.

Almost surely, 2^50129811522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50129811522

50129811522 is an abundant number, since it is smaller than the sum of its proper divisors (81277655361).

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

50129811522 is an frugal number, since it uses more digits than its factorization.

50129811522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 50129811522 in words is "fifty billion, one hundred twenty-nine million, eight hundred eleven thousand, five hundred twenty-two".