520551853405 has 16 divisors (see below), whose sum is σ = 629269176384. Its totient is φ = 413370640000.

The previous prime is 520551853387. The next prime is 520551853513. The reversal of 520551853405 is 504358155025.

It is a happy number.

It is not a de Polignac number, because 520551853405 - 2¹¹ = 520551851357 is a prime.

It is a super-2 number, since 2×520551853405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14341530 + ... + 14377780.

It is an arithmetic number, because the mean of its divisors is an integer number (39329323524).

Almost surely, 2^520551853405 is an apocalyptic number.

It is an amenable number.

520551853405 is a deficient number, since it is larger than the sum of its proper divisors (108717322979).

520551853405 is a wasteful number, since it uses less digits than its factorization.

520551853405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57356.

The product of its (nonzero) digits is 600000, while the sum is 43.

The spelling of 520551853405 in words is "five hundred twenty billion, five hundred fifty-one million, eight hundred fifty-three thousand, four hundred five".