12291820494 has 64 divisors (see below), whose sum is σ = 26122756608. Its totient is φ = 3847536000.

The previous prime is 12291820481. The next prime is 12291820553. The reversal of 12291820494 is 49402819221.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5899977 + ... + 5902059.

It is an arithmetic number, because the mean of its divisors is an integer number (408168072).

Almost surely, 2^12291820494 is an apocalyptic number.

12291820494 is an abundant number, since it is smaller than the sum of its proper divisors (13830936114).

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

12291820494 is a wasteful number, since it uses less digits than its factorization.

12291820494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 12291820494 in words is "twelve billion, two hundred ninety-one million, eight hundred twenty thousand, four hundred ninety-four".