102985317613 has 4 divisors (see below), whose sum is σ = 103145482048. Its totient is φ = 102825153180.

The previous prime is 102985317493. The next prime is 102985317619. The reversal of 102985317613 is 316713589201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102985317613 - 2³³ = 94395383021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102985317619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80081253 + ... + 80082538.

It is an arithmetic number, because the mean of its divisors is an integer number (25786370512).

Almost surely, 2^102985317613 is an apocalyptic number.

It is an amenable number.

102985317613 is a deficient number, since it is larger than the sum of its proper divisors (160164435).

102985317613 is an equidigital number, since it uses as much as digits as its factorization.

102985317613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160164434.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 102985317613 in words is "one hundred two billion, nine hundred eighty-five million, three hundred seventeen thousand, six hundred thirteen".