20454338108 has 6 divisors (see below), whose sum is σ = 35795091696. Its totient is φ = 10227169052.

The previous prime is 20454338089. The next prime is 20454338111. The reversal of 20454338108 is 80183345402.

It is a happy number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2556792260 + ... + 2556792267.

It is an arithmetic number, because the mean of its divisors is an integer number (5965848616).

Almost surely, 2^20454338108 is an apocalyptic number.

It is an amenable number.

20454338108 is a deficient number, since it is larger than the sum of its proper divisors (15340753588).

20454338108 is a wasteful number, since it uses less digits than its factorization.

20454338108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113584531 (or 5113584529 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 20454338108 in words is "twenty billion, four hundred fifty-four million, three hundred thirty-eight thousand, one hundred eight".