102768638169 has 12 divisors (see below), whose sum is σ = 138395006288. Its totient is φ = 67834064400.

The previous prime is 102768638149. The next prime is 102768638173. The reversal of 102768638169 is 961836867201.

It is not a de Polignac number, because 102768638169 - 2³¹ = 100621154521 is a prime.

It is a super-2 number, since 2×102768638169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102768638149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1648459 + ... + 1709664.

Almost surely, 2^102768638169 is an apocalyptic number.

It is an amenable number.

102768638169 is a deficient number, since it is larger than the sum of its proper divisors (35626368119).

102768638169 is an equidigital number, since it uses as much as digits as its factorization.

102768638169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358328 (or 3358227 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 102768638169 in words is "one hundred two billion, seven hundred sixty-eight million, six hundred thirty-eight thousand, one hundred sixty-nine".