13421155422555 has 32 divisors (see below), whose sum is σ = 23861044147200. Its totient is φ = 7157585873376.

The previous prime is 13421155422491. The next prime is 13421155422601. The reversal of 13421155422555 is 55522455112431.

13421155422555 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 1 + 1 + 55 + 42 + 2 + 555 = 666.

It is not a de Polignac number, because 13421155422555 - 2⁶ = 13421155422491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13421155422555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151752 + ... + 5183178.

It is an arithmetic number, because the mean of its divisors is an integer number (745657629600).

Almost surely, 2^{13421155422555} is an apocalyptic number.

13421155422555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13421155422555 is a deficient number, since it is larger than the sum of its proper divisors (10439888724645).

13421155422555 is a wasteful number, since it uses less digits than its factorization.

13421155422555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051200 (or 5051194 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 45.

The spelling of 13421155422555 in words is "thirteen trillion, four hundred twenty-one billion, one hundred fifty-five million, four hundred twenty-two thousand, five hundred fifty-five".