12206634157 has 4 divisors (see below), whose sum is σ = 12211109820. Its totient is φ = 12202158496.

The previous prime is 12206634127. The next prime is 12206634163. The reversal of 12206634157 is 75143660221.

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 6344281801 + 5862352356 = 79651^2 + 76566^2 .

It is a cyclic number.

It is not a de Polignac number, because 12206634157 - 2¹⁵ = 12206601389 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 (12206634127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2233738 + ... + 2239195.

It is an arithmetic number, because the mean of its divisors is an integer number (3052777455).

Almost surely, 2^12206634157 is an apocalyptic number.

It is an amenable number.

12206634157 is a deficient number, since it is larger than the sum of its proper divisors (4475663).

12206634157 is an equidigital number, since it uses as much as digits as its factorization.

12206634157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475662.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 12206634157 in words is "twelve billion, two hundred six million, six hundred thirty-four thousand, one hundred fifty-seven".