108405966654 has 64 divisors (see below), whose sum is σ = 254558361600. Its totient is φ = 34126668576.

The previous prime is 108405966623. The next prime is 108405966661. The reversal of 108405966654 is 456669504801.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 108405966654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 454309 + ... + 650544.

It is an arithmetic number, because the mean of its divisors is an integer number (3977474400).

Almost surely, 2^108405966654 is an apocalyptic number.

108405966654 is an abundant number, since it is smaller than the sum of its proper divisors (146152394946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108405966654 is a wasteful number, since it uses less digits than its factorization.

108405966654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104966 (or 1104960 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 108405966654 in words is "one hundred eight billion, four hundred five million, nine hundred sixty-six thousand, six hundred fifty-four".