13555113531 has 8 divisors (see below), whose sum is σ = 18091190544. Its totient is φ = 9027889440.

The previous prime is 13555113529. The next prime is 13555113563. The reversal of 13555113531 is 13531155531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13555113531 - 2¹ = 13555113529 is a prime.

It is a super-2 number, since 2×13555113531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13555113492 and 13555113501.

It is not an unprimeable number, because it can be changed into a prime (13555113511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2209656 + ... + 2215781.

It is an arithmetic number, because the mean of its divisors is an integer number (2261398818).

Almost surely, 2^13555113531 is an apocalyptic number.

13555113531 is a deficient number, since it is larger than the sum of its proper divisors (4536077013).

13555113531 is a wasteful number, since it uses less digits than its factorization.

13555113531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426461.

The product of its digits is 16875, while the sum is 33.

The spelling of 13555113531 in words is "thirteen billion, five hundred fifty-five million, one hundred thirteen thousand, five hundred thirty-one".