102805708713 has 4 divisors (see below), whose sum is σ = 137074278288. Its totient is φ = 68537139140.

The previous prime is 102805708711. The next prime is 102805708757. The reversal of 102805708713 is 317807508201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 317807508201 = 3 ⋅105935836067.

It is a cyclic number.

It is not a de Polignac number, because 102805708713 - 2¹ = 102805708711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102805708711) 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, 17134284783 + ... + 17134284788.

It is an arithmetic number, because the mean of its divisors is an integer number (34268569572).

Almost surely, 2^102805708713 is an apocalyptic number.

It is an amenable number.

102805708713 is a deficient number, since it is larger than the sum of its proper divisors (34268569575).

102805708713 is an equidigital number, since it uses as much as digits as its factorization.

102805708713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34268569574.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 102805708713 in words is "one hundred two billion, eight hundred five million, seven hundred eight thousand, seven hundred thirteen".