13555213851 has 4 divisors (see below), whose sum is σ = 18073618472. Its totient is φ = 9036809232.

The previous prime is 13555213849. The next prime is 13555213877. The reversal of 13555213851 is 15831255531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13555213851 - 2¹ = 13555213849 is a prime.

It is a super-3 number, since 3×13555213851³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13555213351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259202306 + ... + 2259202311.

It is an arithmetic number, because the mean of its divisors is an integer number (4518404618).

Almost surely, 2^13555213851 is an apocalyptic number.

13555213851 is a deficient number, since it is larger than the sum of its proper divisors (4518404621).

13555213851 is an equidigital number, since it uses as much as digits as its factorization.

13555213851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518404620.

The product of its digits is 90000, while the sum is 39.

The spelling of 13555213851 in words is "thirteen billion, five hundred fifty-five million, two hundred thirteen thousand, eight hundred fifty-one".