616011561513 has 16 divisors (see below), whose sum is σ = 913543853760. Its totient is φ = 410254014528.

The previous prime is 616011561511. The next prime is 616011561521. The reversal of 616011561513 is 315165110616.

616011561513 is a `hidden beast` number, since 6 + 16 + 0 + 1 + 15 + 615 + 13 = 666.

It is not a de Polignac number, because 616011561513 - 2¹ = 616011561511 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (616011561511) 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, 11649795 + ... + 11702552.

It is an arithmetic number, because the mean of its divisors is an integer number (57096490860).

Almost surely, 2^616011561513 is an apocalyptic number.

It is an amenable number.

616011561513 is a deficient number, since it is larger than the sum of its proper divisors (297532292247).

616011561513 is a wasteful number, since it uses less digits than its factorization.

616011561513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23353333 (or 23353327 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

It can be divided in two parts, 6160115 and 61513, that added together give a triangular number (6221628 = T₃₅₂₇).

The spelling of 616011561513 in words is "six hundred sixteen billion, eleven million, five hundred sixty-one thousand, five hundred thirteen".