618520512407 has 16 divisors (see below), whose sum is σ = 709462540800. Its totient is φ = 528225462240.

The previous prime is 618520512373. The next prime is 618520512419. The reversal of 618520512407 is 704215025816.

It is a de Polignac number, because none of the positive numbers 2^k-618520512407 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 (618520512427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5031269 + ... + 5152737.

It is an arithmetic number, because the mean of its divisors is an integer number (44341408800).

Almost surely, 2^618520512407 is an apocalyptic number.

618520512407 is a deficient number, since it is larger than the sum of its proper divisors (90942028393).

618520512407 is a wasteful number, since it uses less digits than its factorization.

618520512407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124126.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 618520512407 in words is "six hundred eighteen billion, five hundred twenty million, five hundred twelve thousand, four hundred seven".