8257616539 has 2 divisors, whose sum is σ = 8257616540. Its totient is φ = 8257616538.

The previous prime is 8257616519. The next prime is 8257616551. The reversal of 8257616539 is 9356167528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8257616539 - 2⁹ = 8257616027 is a prime.

It is not a weakly prime, because it can be changed into another prime (8257616519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128808269 + 4128808270.

It is an arithmetic number, because the mean of its divisors is an integer number (4128808270).

Almost surely, 2^8257616539 is an apocalyptic number.

8257616539 is a deficient number, since it is larger than the sum of its proper divisors (1).

8257616539 is an equidigital number, since it uses as much as digits as its factorization.

8257616539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 52.

The square root of 8257616539 is about 90871.4286175803. The cubic root of 8257616539 is about 2021.2416425292.

The spelling of 8257616539 in words is "eight billion, two hundred fifty-seven million, six hundred sixteen thousand, five hundred thirty-nine".