13543545550 has 24 divisors (see below), whose sum is σ = 26672819616. Its totient is φ = 5098746240.

The previous prime is 13543545529. The next prime is 13543545559. The reversal of 13543545550 is 5554534531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13543545559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7965942 + ... + 7967641.

It is an arithmetic number, because the mean of its divisors is an integer number (1111367484).

Almost surely, 2^13543545550 is an apocalyptic number.

13543545550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13543545550 is a deficient number, since it is larger than the sum of its proper divisors (13129274066).

13543545550 is a wasteful number, since it uses less digits than its factorization.

13543545550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15933612 (or 15933607 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 13543545550 in words is "thirteen billion, five hundred forty-three million, five hundred forty-five thousand, five hundred fifty".