615613616345 has 16 divisors (see below), whose sum is σ = 909213957120. Its totient is φ = 389663123904.

The previous prime is 615613616333. The next prime is 615613616353. The reversal of 615613616345 is 543616316516.

It is a cyclic number.

It is not a de Polignac number, because 615613616345 - 2⁴ = 615613616329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 615613616345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676498025 + ... + 676498934.

It is an arithmetic number, because the mean of its divisors is an integer number (56825872320).

Almost surely, 2^615613616345 is an apocalyptic number.

615613616345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

615613616345 is a deficient number, since it is larger than the sum of its proper divisors (293600340775).

615613616345 is a wasteful number, since it uses less digits than its factorization.

615613616345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352996984.

The product of its digits is 1166400, while the sum is 47.

The spelling of 615613616345 in words is "six hundred fifteen billion, six hundred thirteen million, six hundred sixteen thousand, three hundred forty-five".