12992272157 has 4 divisors (see below), whose sum is σ = 12996027360. Its totient is φ = 12988516956.

The previous prime is 12992272141. The next prime is 12992272159. The reversal of 12992272157 is 75127229921.

12992272157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75127229921 = 27941 ⋅2688781.

It is a cyclic number.

It is not a de Polignac number, because 12992272157 - 2⁴ = 12992272141 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 (12992272159) 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 3 ways as a sum of consecutive naturals, for example, 1872407 + ... + 1879332.

It is an arithmetic number, because the mean of its divisors is an integer number (3249006840).

Almost surely, 2^12992272157 is an apocalyptic number.

It is an amenable number.

12992272157 is a deficient number, since it is larger than the sum of its proper divisors (3755203).

12992272157 is an equidigital number, since it uses as much as digits as its factorization.

12992272157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755202.

The product of its digits is 317520, while the sum is 47.

The spelling of 12992272157 in words is "twelve billion, nine hundred ninety-two million, two hundred seventy-two thousand, one hundred fifty-seven".