108691268769639 has 12 divisors (see below), whose sum is σ = 157352897758056. Its totient is φ = 72297277342992.

The previous prime is 108691268769599. The next prime is 108691268769731. The reversal of 108691268769639 is 936967862196801.

108691268769639 is a `hidden beast` number, since 10 + 86 + 91 + 268 + 76 + 96 + 39 = 666.

It is not a de Polignac number, because 108691268769639 - 2⁷ = 108691268769511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108691268769739) 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, 13630704412 + ... + 13630712385.

It is an arithmetic number, because the mean of its divisors is an integer number (13112741479838).

Almost surely, 2^{108691268769639} is an apocalyptic number.

108691268769639 is a deficient number, since it is larger than the sum of its proper divisors (48661628988417).

108691268769639 is a wasteful number, since it uses less digits than its factorization.

108691268769639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27261417246 (or 27261417243 counting only the distinct ones).

The product of its (nonzero) digits is 2539579392, while the sum is 81.

The spelling of 108691268769639 in words is "one hundred eight trillion, six hundred ninety-one billion, two hundred sixty-eight million, seven hundred sixty-nine thousand, six hundred thirty-nine".