102779666114 has 4 divisors (see below), whose sum is σ = 154169499174. Its totient is φ = 51389833056.

The previous prime is 102779666113. The next prime is 102779666123. The reversal of 102779666114 is 411666977201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 411666977201 = 20857 ⋅19737593.

It can be written as a sum of positive squares in only one way, i.e., 56985806089 + 45793860025 = 238717^2 + 213995^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102779666113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25694916527 + ... + 25694916530.

Almost surely, 2^102779666114 is an apocalyptic number.

102779666114 is a deficient number, since it is larger than the sum of its proper divisors (51389833060).

102779666114 is an equidigital number, since it uses as much as digits as its factorization.

102779666114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51389833059.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 102779666114 in words is "one hundred two billion, seven hundred seventy-nine million, six hundred sixty-six thousand, one hundred fourteen".