520455312345 has 32 divisors (see below), whose sum is σ = 852422643072. Its totient is φ = 271016428032.

The previous prime is 520455312337. The next prime is 520455312353. The reversal of 520455312345 is 543213554025.

It is an interprime number because it is at equal distance from previous prime (520455312337) and next prime (520455312353).

It is not a de Polignac number, because 520455312345 - 2³ = 520455312337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1533799 + ... + 1842131.

It is an arithmetic number, because the mean of its divisors is an integer number (26638207596).

Almost surely, 2^520455312345 is an apocalyptic number.

It is an amenable number.

520455312345 is a deficient number, since it is larger than the sum of its proper divisors (331967330727).

520455312345 is a wasteful number, since it uses less digits than its factorization.

520455312345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311001.

The product of its (nonzero) digits is 360000, while the sum is 39.

The spelling of 520455312345 in words is "five hundred twenty billion, four hundred fifty-five million, three hundred twelve thousand, three hundred forty-five".