102399999157 has 2 divisors, whose sum is σ = 102399999158. Its totient is φ = 102399999156.

The previous prime is 102399999151. The next prime is 102399999181. The reversal of 102399999157 is 751999993201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95390793316 + 7009205841 = 308854^2 + 83721^2 .

It is a cyclic number.

It is not a de Polignac number, because 102399999157 - 2⁷ = 102399999029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102399999151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51199999578 + 51199999579.

It is an arithmetic number, because the mean of its divisors is an integer number (51199999579).

Almost surely, 2^102399999157 is an apocalyptic number.

It is an amenable number.

102399999157 is a deficient number, since it is larger than the sum of its proper divisors (1).

102399999157 is an equidigital number, since it uses as much as digits as its factorization.

102399999157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12400290, while the sum is 64.

The spelling of 102399999157 in words is "one hundred two billion, three hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred fifty-seven".