520404207407 has 32 divisors (see below), whose sum is σ = 623162880000. Its totient is φ = 425197589760.

The previous prime is 520404207403. The next prime is 520404207457. The reversal of 520404207407 is 704702404025.

It is a cyclic number.

It is not a de Polignac number, because 520404207407 - 2² = 520404207403 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 (520404207403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12223844 + ... + 12266342.

It is an arithmetic number, because the mean of its divisors is an integer number (19473840000).

Almost surely, 2^520404207407 is an apocalyptic number.

520404207407 is a deficient number, since it is larger than the sum of its proper divisors (102758672593).

520404207407 is a wasteful number, since it uses less digits than its factorization.

520404207407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43383.

The product of its (nonzero) digits is 62720, while the sum is 35.

The spelling of 520404207407 in words is "five hundred twenty billion, four hundred four million, two hundred seven thousand, four hundred seven".