13564173855 has 16 divisors (see below), whose sum is σ = 21704665824. Its totient is φ = 7233563520.

The previous prime is 13564173827. The next prime is 13564173859. The reversal of 13564173855 is 55837146531.

It is not a de Polignac number, because 13564173855 - 2¹⁷ = 13564042783 is a prime.

It is a super-2 number, since 2×13564173855² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13564173859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159177 + ... + 229053.

It is an arithmetic number, because the mean of its divisors is an integer number (1356541614).

Almost surely, 2^13564173855 is an apocalyptic number.

13564173855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13564173855 is a deficient number, since it is larger than the sum of its proper divisors (8140491969).

13564173855 is a wasteful number, since it uses less digits than its factorization.

13564173855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82826.

The product of its digits is 1512000, while the sum is 48.

The spelling of 13564173855 in words is "thirteen billion, five hundred sixty-four million, one hundred seventy-three thousand, eight hundred fifty-five".