613612603216520 has 32 divisors (see below), whose sum is σ = 1384584312447000. Its totient is φ = 244741760360448.

The previous prime is 613612603216519. The next prime is 613612603216621. The reversal of 613612603216520 is 25612306216316.

It can be written as a sum of positive squares in 4 ways, for example, as 613233804819364 + 378798397156 = 24763558^2 + 615466^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21977514809 + ... + 21977542728.

Almost surely, 2^{613612603216520} is an apocalyptic number.

It is an amenable number.

613612603216520 is an abundant number, since it is smaller than the sum of its proper divisors (770971709230480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613612603216520 is a wasteful number, since it uses less digits than its factorization.

613612603216520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43955057897 (or 43955057893 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 613612603216520 in words is "six hundred thirteen trillion, six hundred twelve billion, six hundred three million, two hundred sixteen thousand, five hundred twenty".