2616902361649 has 2 divisors, whose sum is σ = 2616902361650. Its totient is φ = 2616902361648.

The previous prime is 2616902361643. The next prime is 2616902361653. The reversal of 2616902361649 is 9461632096162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1464354111025 + 1152548250624 = 1210105^2 + 1073568^2 .

It is a cyclic number.

It is not a de Polignac number, because 2616902361649 - 2¹⁷ = 2616902230577 is a prime.

It is a super-2 number, since 2×2616902361649² (a number of 26 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 2616902361649.

It is not a weakly prime, because it can be changed into another prime (2616902361643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1308451180824 + 1308451180825.

It is an arithmetic number, because the mean of its divisors is an integer number (1308451180825).

Almost surely, 2^{2616902361649} is an apocalyptic number.

It is an amenable number.

2616902361649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2616902361649 is an equidigital number, since it uses as much as digits as its factorization.

2616902361649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The spelling of 2616902361649 in words is "two trillion, six hundred sixteen billion, nine hundred two million, three hundred sixty-one thousand, six hundred forty-nine".