50545215513 has 64 divisors (see below), whose sum is σ = 83322265600. Its totient is φ = 30072824640.

The previous prime is 50545215509. The next prime is 50545215527. The reversal of 50545215513 is 31551254505.

50545215513 is a `hidden beast` number, since 5 + 0 + 54 + 52 + 1 + 551 + 3 = 666.

It is not a de Polignac number, because 50545215513 - 2² = 50545215509 is a prime.

It is a super-2 number, since 2×50545215513² (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 (50545215503) 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, 19007778 + ... + 19010436.

It is an arithmetic number, because the mean of its divisors is an integer number (1301910400).

Almost surely, 2^50545215513 is an apocalyptic number.

It is an amenable number.

50545215513 is a deficient number, since it is larger than the sum of its proper divisors (32777050087).

50545215513 is a wasteful number, since it uses less digits than its factorization.

50545215513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459 (or 4453 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 50545215513 in words is "fifty billion, five hundred forty-five million, two hundred fifteen thousand, five hundred thirteen".