13531044550 has 12 divisors (see below), whose sum is σ = 25167742956. Its totient is φ = 5412417800.

The previous prime is 13531044521. The next prime is 13531044581. The reversal of 13531044550 is 5544013531.

It is a super-2 number, since 2×13531044550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135310396 + ... + 135310495.

It is an arithmetic number, because the mean of its divisors is an integer number (2097311913).

Almost surely, 2^13531044550 is an apocalyptic number.

13531044550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13531044550 is a deficient number, since it is larger than the sum of its proper divisors (11636698406).

13531044550 is a wasteful number, since it uses less digits than its factorization.

13531044550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270620903 (or 270620898 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 13531044550 in words is "thirteen billion, five hundred thirty-one million, forty-four thousand, five hundred fifty".