12431667620443 has 2 divisors, whose sum is σ = 12431667620444. Its totient is φ = 12431667620442.

The previous prime is 12431667620417. The next prime is 12431667620479. The reversal of 12431667620443 is 34402676613421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12431667620443 is a prime.

It is not a weakly prime, because it can be changed into another prime (12431667620543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215833810221 + 6215833810222.

It is an arithmetic number, because the mean of its divisors is an integer number (6215833810222).

Almost surely, 2^{12431667620443} is an apocalyptic number.

12431667620443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431667620443 is an equidigital number, since it uses as much as digits as its factorization.

12431667620443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 49.

The spelling of 12431667620443 in words is "twelve trillion, four hundred thirty-one billion, six hundred sixty-seven million, six hundred twenty thousand, four hundred forty-three".