18413825954456 has 8 divisors (see below), whose sum is σ = 34525923664620. Its totient is φ = 9206912977224.

The previous prime is 18413825954449. The next prime is 18413825954471. The reversal of 18413825954456 is 65445952831481.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 18413825954392 and 18413825954401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1150864122146 + ... + 1150864122161.

Almost surely, 2^{18413825954456} is an apocalyptic number.

It is an amenable number.

18413825954456 is a deficient number, since it is larger than the sum of its proper divisors (16112097710164).

18413825954456 is a wasteful number, since it uses less digits than its factorization.

18413825954456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301728244313 (or 2301728244309 counting only the distinct ones).

The product of its digits is 165888000, while the sum is 65.

The spelling of 18413825954456 in words is "eighteen trillion, four hundred thirteen billion, eight hundred twenty-five million, nine hundred fifty-four thousand, four hundred fifty-six".