12291744478357 has 8 divisors (see below), whose sum is σ = 12464928449280. Its totient is φ = 12118562196720.

The previous prime is 12291744478339. The next prime is 12291744478397. The reversal of 12291744478357 is 75387444719221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12291744478357 - 2⁴³ = 3495651456149 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 (12291744478397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24614083 + ... + 25108495.

It is an arithmetic number, because the mean of its divisors is an integer number (1558116056160).

Almost surely, 2^{12291744478357} is an apocalyptic number.

It is an amenable number.

12291744478357 is a deficient number, since it is larger than the sum of its proper divisors (173183970923).

12291744478357 is an equidigital number, since it uses as much as digits as its factorization.

12291744478357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844643.

The product of its digits is 94832640, while the sum is 64.

The spelling of 12291744478357 in words is "twelve trillion, two hundred ninety-one billion, seven hundred forty-four million, four hundred seventy-eight thousand, three hundred fifty-seven".