102768792065 has 4 divisors (see below), whose sum is σ = 123322550484. Its totient is φ = 82215033648.

The previous prime is 102768792059. The next prime is 102768792101. The reversal of 102768792065 is 560297867201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560297867201 = 1697 ⋅330169633.

It can be written as a sum of positive squares in 2 ways, for example, as 76242806641 + 26525985424 = 276121^2 + 162868^2 .

It is a cyclic number.

It is not a de Polignac number, because 102768792065 - 2⁸ = 102768791809 is a prime.

It is a super-2 number, since 2×102768792065² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102768791998 and 102768792016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10276879202 + ... + 10276879211.

It is an arithmetic number, because the mean of its divisors is an integer number (30830637621).

Almost surely, 2^102768792065 is an apocalyptic number.

It is an amenable number.

102768792065 is a deficient number, since it is larger than the sum of its proper divisors (20553758419).

102768792065 is an equidigital number, since it uses as much as digits as its factorization.

102768792065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20553758418.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 102768792065 in words is "one hundred two billion, seven hundred sixty-eight million, seven hundred ninety-two thousand, sixty-five".