616256551019 has 2 divisors, whose sum is σ = 616256551020. Its totient is φ = 616256551018.

The previous prime is 616256551007. The next prime is 616256551063. The reversal of 616256551019 is 910155652616.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616256551019 is a prime.

It is a super-2 number, since 2×616256551019² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (616256551219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308128275509 + 308128275510.

It is an arithmetic number, because the mean of its divisors is an integer number (308128275510).

Almost surely, 2^616256551019 is an apocalyptic number.

616256551019 is a deficient number, since it is larger than the sum of its proper divisors (1).

616256551019 is an equidigital number, since it uses as much as digits as its factorization.

616256551019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 616256551019 in words is "six hundred sixteen billion, two hundred fifty-six million, five hundred fifty-one thousand, nineteen".