13634021553426 has 24 divisors (see below), whose sum is σ = 30634468182864. Its totient is φ = 4544673850980.

The previous prime is 13634021553359. The next prime is 13634021553431. The reversal of 13634021553426 is 62435512043631.

13634021553426 is a `hidden beast` number, since 1 + 3 + 6 + 3 + 4 + 0 + 215 + 5 + 3 + 426 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14026770660 + ... + 14026771631.

It is an arithmetic number, because the mean of its divisors is an integer number (1276436174286).

Almost surely, 2^{13634021553426} is an apocalyptic number.

13634021553426 is an abundant number, since it is smaller than the sum of its proper divisors (17000446629438).

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

13634021553426 is an equidigital number, since it uses as much as digits as its factorization.

13634021553426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28053542308 (or 28053542296 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 13634021553426 in words is "thirteen trillion, six hundred thirty-four billion, twenty-one million, five hundred fifty-three thousand, four hundred twenty-six".