12664327157 has 16 divisors (see below), whose sum is σ = 13690596672. Its totient is φ = 11670247680.

The previous prime is 12664327147. The next prime is 12664327163. The reversal of 12664327157 is 75172346621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12664327157 - 2⁸ = 12664326901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664327147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428078 + ... + 456704.

It is an arithmetic number, because the mean of its divisors is an integer number (855662292).

Almost surely, 2^12664327157 is an apocalyptic number.

12664327157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12664327157 is a deficient number, since it is larger than the sum of its proper divisors (1026269515).

12664327157 is a wasteful number, since it uses less digits than its factorization.

12664327157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29188.

The product of its digits is 423360, while the sum is 44.

The spelling of 12664327157 in words is "twelve billion, six hundred sixty-four million, three hundred twenty-seven thousand, one hundred fifty-seven".