13365497172 has 48 divisors (see below), whose sum is σ = 33029156160. Its totient is φ = 4192015872.

The previous prime is 13365497153. The next prime is 13365497191. The reversal of 13365497172 is 27179456331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13365497153) and next prime (13365497191).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1224483 + ... + 1235349.

It is an arithmetic number, because the mean of its divisors is an integer number (688107420).

Almost surely, 2^13365497172 is an apocalyptic number.

13365497172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13365497172 is an abundant number, since it is smaller than the sum of its proper divisors (19663658988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13365497172 is a wasteful number, since it uses less digits than its factorization.

13365497172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920 (or 16918 counting only the distinct ones).

The product of its digits is 952560, while the sum is 48.

The spelling of 13365497172 in words is "thirteen billion, three hundred sixty-five million, four hundred ninety-seven thousand, one hundred seventy-two".