20108186354 has 8 divisors (see below), whose sum is σ = 30460916268. Its totient is φ = 9954547600.

The previous prime is 20108186321. The next prime is 20108186377. The reversal of 20108186354 is 45368180102.

It can be written as a sum of positive squares in 2 ways, for example, as 15867181225 + 4241005129 = 125965^2 + 65123^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49772537 + ... + 49772940.

Almost surely, 2^20108186354 is an apocalyptic number.

20108186354 is a deficient number, since it is larger than the sum of its proper divisors (10352729914).

20108186354 is a wasteful number, since it uses less digits than its factorization.

20108186354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99545580.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 20108186354 in words is "twenty billion, one hundred eight million, one hundred eighty-six thousand, three hundred fifty-four".