616572518413 has 2 divisors, whose sum is σ = 616572518414. Its totient is φ = 616572518412.

The previous prime is 616572518389. The next prime is 616572518447. The reversal of 616572518413 is 314815275616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610768821289 + 5803697124 = 781517^2 + 76182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616572518413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616572528413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308286259206 + 308286259207.

It is an arithmetic number, because the mean of its divisors is an integer number (308286259207).

Almost surely, 2^616572518413 is an apocalyptic number.

It is an amenable number.

616572518413 is a deficient number, since it is larger than the sum of its proper divisors (1).

616572518413 is an equidigital number, since it uses as much as digits as its factorization.

616572518413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 49.

The spelling of 616572518413 in words is "six hundred sixteen billion, five hundred seventy-two million, five hundred eighteen thousand, four hundred thirteen".