616311447569 has 2 divisors, whose sum is σ = 616311447570. Its totient is φ = 616311447568.

The previous prime is 616311447553. The next prime is 616311447599. The reversal of 616311447569 is 965744113616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453821837569 + 162489610000 = 673663^2 + 403100^2 .

It is a cyclic number.

It is not a de Polignac number, because 616311447569 - 2⁴ = 616311447553 is a prime.

It is a super-2 number, since 2×616311447569² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 616311447569.

It is not a weakly prime, because it can be changed into another prime (616311447529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308155723784 + 308155723785.

It is an arithmetic number, because the mean of its divisors is an integer number (308155723785).

Almost surely, 2^616311447569 is an apocalyptic number.

It is an amenable number.

616311447569 is a deficient number, since it is larger than the sum of its proper divisors (1).

616311447569 is an equidigital number, since it uses as much as digits as its factorization.

616311447569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The spelling of 616311447569 in words is "six hundred sixteen billion, three hundred eleven million, four hundred forty-seven thousand, five hundred sixty-nine".