12291196257 has 16 divisors (see below), whose sum is σ = 18342098880. Its totient is φ = 8134317216.

The previous prime is 12291196249. The next prime is 12291196261. The reversal of 12291196257 is 75269119221.

12291196257 is a `hidden beast` number, since 1 + 2 + 2 + 9 + 1 + 19 + 625 + 7 = 666.

12291196257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12291196257 - 2³ = 12291196249 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12291196207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657723 + ... + 1665120.

It is an arithmetic number, because the mean of its divisors is an integer number (1146381180).

Almost surely, 2^12291196257 is an apocalyptic number.

It is an amenable number.

12291196257 is a deficient number, since it is larger than the sum of its proper divisors (6050902623).

12291196257 is a wasteful number, since it uses less digits than its factorization.

12291196257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322989 (or 3322983 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The spelling of 12291196257 in words is "twelve billion, two hundred ninety-one million, one hundred ninety-six thousand, two hundred fifty-seven".