616570116557 has 2 divisors, whose sum is σ = 616570116558. Its totient is φ = 616570116556.

The previous prime is 616570116479. The next prime is 616570116563. The reversal of 616570116557 is 755611075616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339584742121 + 276985374436 = 582739^2 + 526294^2 .

It is a cyclic number.

It is not a de Polignac number, because 616570116557 - 2¹⁰ = 616570115533 is a prime.

It is a super-2 number, since 2×616570116557² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616570146557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308285058278 + 308285058279.

It is an arithmetic number, because the mean of its divisors is an integer number (308285058279).

Almost surely, 2^616570116557 is an apocalyptic number.

It is an amenable number.

616570116557 is a deficient number, since it is larger than the sum of its proper divisors (1).

616570116557 is an equidigital number, since it uses as much as digits as its factorization.

616570116557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1323000, while the sum is 50.

The spelling of 616570116557 in words is "six hundred sixteen billion, five hundred seventy million, one hundred sixteen thousand, five hundred fifty-seven".