12291471387882 has 12 divisors (see below), whose sum is σ = 26631521340450. Its totient is φ = 4097157129288.

The previous prime is 12291471387847. The next prime is 12291471387913. The reversal of 12291471387882 is 28878317419221.

12291471387882 is a `hidden beast` number, since 1 + 2 + 2 + 9 + 1 + 471 + 3 + 87 + 8 + 82 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11540702859921 + 750768527961 = 3397161^2 + 866469^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341429760757 + ... + 341429760792.

Almost surely, 2^{12291471387882} is an apocalyptic number.

12291471387882 is an abundant number, since it is smaller than the sum of its proper divisors (14340049952568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12291471387882 is a wasteful number, since it uses less digits than its factorization.

12291471387882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682859521557 (or 682859521554 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 63.

The spelling of 12291471387882 in words is "twelve trillion, two hundred ninety-one billion, four hundred seventy-one million, three hundred eighty-seven thousand, eight hundred eighty-two".