102989569679 has 4 divisors (see below), whose sum is σ = 104400385776. Its totient is φ = 101578753584.

The previous prime is 102989569667. The next prime is 102989569699. The reversal of 102989569679 is 976965989201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976965989201 = 41 ⋅23828438761.

It is a cyclic number.

It is not a de Polignac number, because 102989569679 - 2²⁸ = 102721134223 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 (102989569699) 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, 705407939 + ... + 705408084.

It is an arithmetic number, because the mean of its divisors is an integer number (26100096444).

Almost surely, 2^102989569679 is an apocalyptic number.

102989569679 is a deficient number, since it is larger than the sum of its proper divisors (1410816097).

102989569679 is an equidigital number, since it uses as much as digits as its factorization.

102989569679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410816096.

The product of its (nonzero) digits is 132269760, while the sum is 71.

The spelling of 102989569679 in words is "one hundred two billion, nine hundred eighty-nine million, five hundred sixty-nine thousand, six hundred seventy-nine".