109638663759 has 24 divisors (see below), whose sum is σ = 164053340672. Its totient is φ = 70484625360.

The previous prime is 109638663731. The next prime is 109638663779. The reversal of 109638663759 is 957366836901.

It is not a de Polignac number, because 109638663759 - 2⁵ = 109638663727 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109638663696 and 109638663705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109638663779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615337 + ... + 773250.

Almost surely, 2^109638663759 is an apocalyptic number.

109638663759 is a deficient number, since it is larger than the sum of its proper divisors (54414676913).

109638663759 is a wasteful number, since it uses less digits than its factorization.

109638663759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388907 (or 1388904 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 63.

The spelling of 109638663759 in words is "one hundred nine billion, six hundred thirty-eight million, six hundred sixty-three thousand, seven hundred fifty-nine".