13215404545255 has 32 divisors (see below), whose sum is σ = 18240216802560. Its totient is φ = 9090592600320.

The previous prime is 13215404545243. The next prime is 13215404545271. The reversal of 13215404545255 is 55254540451231.

It is a happy number.

It is not a de Polignac number, because 13215404545255 - 2⁷ = 13215404545127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9603469 + ... + 10892998.

It is an arithmetic number, because the mean of its divisors is an integer number (570006775080).

Almost surely, 2^{13215404545255} is an apocalyptic number.

13215404545255 is a deficient number, since it is larger than the sum of its proper divisors (5024812257305).

13215404545255 is a wasteful number, since it uses less digits than its factorization.

13215404545255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20497119.

The product of its (nonzero) digits is 2400000, while the sum is 46.

Adding to 13215404545255 its reverse (55254540451231), we get a palindrome (68469944996486).

The spelling of 13215404545255 in words is "thirteen trillion, two hundred fifteen billion, four hundred four million, five hundred forty-five thousand, two hundred fifty-five".