50015296881 has 81 divisors (see below), whose sum is σ = 82788878809. Its totient is φ = 30191535000.

The previous prime is 50015296843. The next prime is 50015296883. The reversal of 50015296881 is 18869251005.

It is a happy number.

The square root of 50015296881 is 223641.

It is a perfect power (a square), and thus also a powerful number.

50015296881 is a `hidden beast` number, since 500 + 1 + 5 + 2 + 9 + 68 + 81 = 666.

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 50015296881 - 2¹³ = 50015288689 is a prime.

It is a super-2 number, since 2×50015296881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50015296883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 199264006 + ... + 199264256.

Almost surely, 2^50015296881 is an apocalyptic number.

50015296881 is the 223641-st square number.

50015296881 is the 111821-st centered octagonal number.

It is an amenable number.

50015296881 is a deficient number, since it is larger than the sum of its proper divisors (32773581928).

50015296881 is an frugal number, since it uses more digits than its factorization.

50015296881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 50015296881 in words is "fifty billion, fifteen million, two hundred ninety-six thousand, eight hundred eighty-one".