50015721608 has 8 divisors (see below), whose sum is σ = 93779478030. Its totient is φ = 25007860800.

The previous prime is 50015721601. The next prime is 50015721611. The reversal of 50015721608 is 80612751005.

It can be written as a sum of positive squares in only one way, i.e., 46992701284 + 3023020324 = 216778^2 + 54982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (50015721601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3125982593 + ... + 3125982608.

Almost surely, 2^50015721608 is an apocalyptic number.

It is an amenable number.

50015721608 is a deficient number, since it is larger than the sum of its proper divisors (43763756422).

50015721608 is a wasteful number, since it uses less digits than its factorization.

50015721608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251965207 (or 6251965203 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 50015721608 in words is "fifty billion, fifteen million, seven hundred twenty-one thousand, six hundred eight".