520902845806 has 16 divisors (see below), whose sum is σ = 905208861024. Its totient is φ = 220185938304.

The previous prime is 520902845789. The next prime is 520902845809. The reversal of 520902845806 is 608548209025.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 520902845806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520902845809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254843815 + ... + 254845858.

It is an arithmetic number, because the mean of its divisors is an integer number (56575553814).

Almost surely, 2^520902845806 is an apocalyptic number.

520902845806 is a deficient number, since it is larger than the sum of its proper divisors (384306015218).

520902845806 is a wasteful number, since it uses less digits than its factorization.

520902845806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509689755.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 520902845806 in words is "five hundred twenty billion, nine hundred two million, eight hundred forty-five thousand, eight hundred six".