102398041517 has 2 divisors, whose sum is σ = 102398041518. Its totient is φ = 102398041516.

The previous prime is 102398041513. The next prime is 102398041531. The reversal of 102398041517 is 715140893201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52986975721 + 49411065796 = 230189^2 + 222286^2 .

It is a cyclic number.

It is not a de Polignac number, because 102398041517 - 2² = 102398041513 is a prime.

It is a super-2 number, since 2×102398041517² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102398041511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51199020758 + 51199020759.

It is an arithmetic number, because the mean of its divisors is an integer number (51199020759).

Almost surely, 2^102398041517 is an apocalyptic number.

It is an amenable number.

102398041517 is a deficient number, since it is larger than the sum of its proper divisors (1).

102398041517 is an equidigital number, since it uses as much as digits as its factorization.

102398041517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 102398041517 in words is "one hundred two billion, three hundred ninety-eight million, forty-one thousand, five hundred seventeen".