520050966121 has 4 divisors (see below), whose sum is σ = 524911255632. Its totient is φ = 515190676612.

The previous prime is 520050966079. The next prime is 520050966137. The reversal of 520050966121 is 121669050025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520050966121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520050966161) 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, 2430144595 + ... + 2430144808.

It is an arithmetic number, because the mean of its divisors is an integer number (131227813908).

Almost surely, 2^520050966121 is an apocalyptic number.

It is an amenable number.

520050966121 is a deficient number, since it is larger than the sum of its proper divisors (4860289511).

520050966121 is a wasteful number, since it uses less digits than its factorization.

520050966121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860289510.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 520050966121 in words is "five hundred twenty billion, fifty million, nine hundred sixty-six thousand, one hundred twenty-one".