13555620116 has 12 divisors (see below), whose sum is σ = 23727318132. Its totient is φ = 6776386368.

The previous prime is 13555620109. The next prime is 13555620131. The reversal of 13555620116 is 61102655531.

It can be written as a sum of positive squares in 2 ways, for example, as 8080212100 + 5475408016 = 89890^2 + 73996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334355 + ... + 372698.

It is an arithmetic number, because the mean of its divisors is an integer number (1977276511).

Almost surely, 2^13555620116 is an apocalyptic number.

It is an amenable number.

13555620116 is a deficient number, since it is larger than the sum of its proper divisors (10171698016).

13555620116 is a wasteful number, since it uses less digits than its factorization.

13555620116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711850 (or 711848 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 13555620116 in words is "thirteen billion, five hundred fifty-five million, six hundred twenty thousand, one hundred sixteen".