520342626311 has 4 divisors (see below), whose sum is σ = 550951016112. Its totient is φ = 489734236512.

The previous prime is 520342626299. The next prime is 520342626337. The reversal of 520342626311 is 113626243025.

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 520342626311 - 2¹⁸ = 520342364167 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 (520342626371) 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, 15304194875 + ... + 15304194908.

It is an arithmetic number, because the mean of its divisors is an integer number (137737754028).

Almost surely, 2^520342626311 is an apocalyptic number.

520342626311 is a deficient number, since it is larger than the sum of its proper divisors (30608389801).

520342626311 is a wasteful number, since it uses less digits than its factorization.

520342626311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30608389800.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 520342626311 its reverse (113626243025), we get a palindrome (633968869336).

The spelling of 520342626311 in words is "five hundred twenty billion, three hundred forty-two million, six hundred twenty-six thousand, three hundred eleven".