50121613511 has 4 divisors (see below), whose sum is σ = 51476251752. Its totient is φ = 48766975272.

The previous prime is 50121613469. The next prime is 50121613567. The reversal of 50121613511 is 11531612105.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50121613511 - 2¹⁰ = 50121612487 is a prime.

It is a super-2 number, since 2×50121613511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50121613571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677319065 + ... + 677319138.

It is an arithmetic number, because the mean of its divisors is an integer number (12869062938).

Almost surely, 2^50121613511 is an apocalyptic number.

50121613511 is a deficient number, since it is larger than the sum of its proper divisors (1354638241).

50121613511 is a wasteful number, since it uses less digits than its factorization.

50121613511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354638240.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 50121613511 in words is "fifty billion, one hundred twenty-one million, six hundred thirteen thousand, five hundred eleven".