13664261506 has 16 divisors (see below), whose sum is σ = 23428022400. Its totient is φ = 5855218560.

The previous prime is 13664261503. The next prime is 13664261549. The reversal of 13664261506 is 60516246631.

It is not an unprimeable number, because it can be changed into a prime (13664261503) 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, 25170 + ... + 167218.

It is an arithmetic number, because the mean of its divisors is an integer number (1464251400).

Almost surely, 2^13664261506 is an apocalyptic number.

13664261506 is a deficient number, since it is larger than the sum of its proper divisors (9763760894).

13664261506 is a wasteful number, since it uses less digits than its factorization.

13664261506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148929.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 13664261506 in words is "thirteen billion, six hundred sixty-four million, two hundred sixty-one thousand, five hundred six".