12292887961 has 4 divisors (see below), whose sum is σ = 12301361424. Its totient is φ = 12284414500.

The previous prime is 12292887949. The next prime is 12292887967. The reversal of 12292887961 is 16978829221.

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: 16978829221 = 30803 ⋅551207.

It is a cyclic number.

It is not a de Polignac number, because 12292887961 - 2²⁵ = 12259333529 is a prime.

It is a super-2 number, since 2×12292887961² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12292887967) 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, 4234555 + ... + 4237456.

It is an arithmetic number, because the mean of its divisors is an integer number (3075340356).

Almost surely, 2^12292887961 is an apocalyptic number.

It is an amenable number.

12292887961 is a deficient number, since it is larger than the sum of its proper divisors (8473463).

12292887961 is an equidigital number, since it uses as much as digits as its factorization.

12292887961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8473462.

The product of its digits is 1741824, while the sum is 55.

The spelling of 12292887961 in words is "twelve billion, two hundred ninety-two million, eight hundred eighty-seven thousand, nine hundred sixty-one".