8157500899 has 2 divisors, whose sum is σ = 8157500900. Its totient is φ = 8157500898.

The previous prime is 8157500861. The next prime is 8157500929. The reversal of 8157500899 is 9980057518.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8157500899 - 2⁹ = 8157500387 is a prime.

It is not a weakly prime, because it can be changed into another prime (8157500599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4078750449 + 4078750450.

It is an arithmetic number, because the mean of its divisors is an integer number (4078750450).

Almost surely, 2^8157500899 is an apocalyptic number.

8157500899 is a deficient number, since it is larger than the sum of its proper divisors (1).

8157500899 is an equidigital number, since it uses as much as digits as its factorization.

8157500899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 8157500899 is about 90318.8845092764. The cubic root of 8157500899 is about 2013.0398710254.

The spelling of 8157500899 in words is "eight billion, one hundred fifty-seven million, five hundred thousand, eight hundred ninety-nine".