108938361052665 has 12 divisors (see below), whose sum is σ = 188826492491364. Its totient is φ = 58100459228064.

The previous prime is 108938361052649. The next prime is 108938361052711. The reversal of 108938361052665 is 566250163839801.

It is a happy number.

108938361052665 is a `hidden beast` number, since 1 + 0 + 8 + 9 + 3 + 8 + 3 + 610 + 5 + 2 + 6 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 86361874885881 + 22576486166784 = 9293109^2 + 4751472^2 .

It is not a de Polignac number, because 108938361052665 - 2⁴ = 108938361052649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1210426233874 + ... + 1210426233963.

It is an arithmetic number, because the mean of its divisors is an integer number (15735541040947).

Almost surely, 2^{108938361052665} is an apocalyptic number.

108938361052665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108938361052665 is a deficient number, since it is larger than the sum of its proper divisors (79888131438699).

108938361052665 is a wasteful number, since it uses less digits than its factorization.

108938361052665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420852467848 (or 2420852467845 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 63.

The spelling of 108938361052665 in words is "one hundred eight trillion, nine hundred thirty-eight billion, three hundred sixty-one million, fifty-two thousand, six hundred sixty-five".