108654615889 has 4 divisors (see below), whose sum is σ = 108682401600. Its totient is φ = 108626830180.

The previous prime is 108654615877. The next prime is 108654615907. The reversal of 108654615889 is 988516456801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988516456801 = 82471 ⋅11986231.

It is a cyclic number.

It is not a de Polignac number, because 108654615889 - 2²³ = 108646227281 is a prime.

It is a super-2 number, since 2×108654615889² (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 (108654615089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13886989 + ... + 13894810.

It is an arithmetic number, because the mean of its divisors is an integer number (27170600400).

Almost surely, 2^108654615889 is an apocalyptic number.

It is an amenable number.

108654615889 is a deficient number, since it is larger than the sum of its proper divisors (27785711).

108654615889 is an equidigital number, since it uses as much as digits as its factorization.

108654615889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27785710.

The product of its (nonzero) digits is 16588800, while the sum is 61.

The spelling of 108654615889 in words is "one hundred eight billion, six hundred fifty-four million, six hundred fifteen thousand, eight hundred eighty-nine".