13855320001555 has 16 divisors (see below), whose sum is σ = 16689436097760. Its totient is φ = 11042297913088.

The previous prime is 13855320001547. The next prime is 13855320001571. The reversal of 13855320001555 is 55510002355831.

13855320001555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13855320001555 - 2³ = 13855320001547 is a prime.

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, 3343210 + ... + 6235999.

It is an arithmetic number, because the mean of its divisors is an integer number (1043089756110).

Almost surely, 2^{13855320001555} is an apocalyptic number.

13855320001555 is a deficient number, since it is larger than the sum of its proper divisors (2834116096205).

13855320001555 is an equidigital number, since it uses as much as digits as its factorization.

13855320001555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580310.

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 13855320001555 in words is "thirteen trillion, eight hundred fifty-five billion, three hundred twenty million, one thousand, five hundred fifty-five".