12458456398 has 4 divisors (see below), whose sum is σ = 18687684600. Its totient is φ = 6229228198.

The previous prime is 12458456363. The next prime is 12458456401. The reversal of 12458456398 is 89365485421.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 3114614098 + ... + 3114614101.

It is an arithmetic number, because the mean of its divisors is an integer number (4671921150).

Almost surely, 2^12458456398 is an apocalyptic number.

12458456398 is a deficient number, since it is larger than the sum of its proper divisors (6229228202).

12458456398 is an equidigital number, since it uses as much as digits as its factorization.

12458456398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6229228201.

The product of its digits is 8294400, while the sum is 55.

The spelling of 12458456398 in words is "twelve billion, four hundred fifty-eight million, four hundred fifty-six thousand, three hundred ninety-eight".