13660326506 has 16 divisors (see below), whose sum is σ = 21708497664. Its totient is φ = 6424630464.

The previous prime is 13660326499. The next prime is 13660326509. The reversal of 13660326506 is 60562306631.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13660326506.

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 7 ways as a sum of consecutive naturals, for example, 58010 + ... + 175173.

It is an arithmetic number, because the mean of its divisors is an integer number (1356781104).

Almost surely, 2^13660326506 is an apocalyptic number.

13660326506 is a deficient number, since it is larger than the sum of its proper divisors (8048171158).

13660326506 is a wasteful number, since it uses less digits than its factorization.

13660326506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234925.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 13660326506 in words is "thirteen billion, six hundred sixty million, three hundred twenty-six thousand, five hundred six".