12663901157 has 4 divisors (see below), whose sum is σ = 12871506156. Its totient is φ = 12456296160.

The previous prime is 12663901141. The next prime is 12663901169. The reversal of 12663901157 is 75110936621.

It is a Cunningham number, because it is equal to 112534²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411846436 + 12252054721 = 20294^2 + 110689^2 .

It is a cyclic number.

It is not a de Polignac number, because 12663901157 - 2⁴ = 12663901141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663901127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103802408 + ... + 103802529.

It is an arithmetic number, because the mean of its divisors is an integer number (3217876539).

Almost surely, 2^12663901157 is an apocalyptic number.

It is an amenable number.

12663901157 is a deficient number, since it is larger than the sum of its proper divisors (207604999).

12663901157 is an equidigital number, since it uses as much as digits as its factorization.

12663901157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207604998.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 12663901157 in words is "twelve billion, six hundred sixty-three million, nine hundred one thousand, one hundred fifty-seven".