13555213805 has 16 divisors (see below), whose sum is σ = 18602083200. Its totient is φ = 9288965952.

The previous prime is 13555213781. The next prime is 13555213813. The reversal of 13555213805 is 50831255531.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-13555213805 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70799 + ... + 179228.

It is an arithmetic number, because the mean of its divisors is an integer number (1162630200).

Almost surely, 2^13555213805 is an apocalyptic number.

It is an amenable number.

13555213805 is a deficient number, since it is larger than the sum of its proper divisors (5046869395).

13555213805 is a wasteful number, since it uses less digits than its factorization.

13555213805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251588.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 13555213805 in words is "thirteen billion, five hundred fifty-five million, two hundred thirteen thousand, eight hundred five".