13660326504 has 48 divisors (see below), whose sum is σ = 40360057920. Its totient is φ = 4139492640.

The previous prime is 13660326499. The next prime is 13660326509. The reversal of 13660326504 is 40562306631.

It is an interprime number because it is at equal distance from previous prime (13660326499) and next prime (13660326509).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13660326509) 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, 8623152 + ... + 8624735.

It is an arithmetic number, because the mean of its divisors is an integer number (840834540).

Almost surely, 2^13660326504 is an apocalyptic number.

It is an amenable number.

13660326504 is an abundant number, since it is smaller than the sum of its proper divisors (26699731416).

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

13660326504 is a wasteful number, since it uses less digits than its factorization.

13660326504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17247910 (or 17247903 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 13660326504 in words is "thirteen billion, six hundred sixty million, three hundred twenty-six thousand, five hundred four".