520768205023 has 6 divisors (see below), whose sum is σ = 572414638712. Its totient is φ = 473425640820.

The previous prime is 520768204993. The next prime is 520768205057. The reversal of 520768205023 is 320502867025.

It is not a de Polignac number, because 520768205023 - 2²⁵ = 520734650591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520768205623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2151934611 + ... + 2151934852.

Almost surely, 2^520768205023 is an apocalyptic number.

520768205023 is a deficient number, since it is larger than the sum of its proper divisors (51646433689).

520768205023 is a wasteful number, since it uses less digits than its factorization.

520768205023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303869485 (or 4303869474 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 520768205023 in words is "five hundred twenty billion, seven hundred sixty-eight million, two hundred five thousand, twenty-three".