12459748891 has 8 divisors (see below), whose sum is σ = 12637414368. Its totient is φ = 12282144000.

The previous prime is 12459748837. The next prime is 12459748909. The reversal of 12459748891 is 19884795421.

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 12459748891 - 2¹⁵ = 12459716123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12459748831) 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, 545521 + ... + 567901.

It is an arithmetic number, because the mean of its divisors is an integer number (1579676796).

Almost surely, 2^12459748891 is an apocalyptic number.

12459748891 is a deficient number, since it is larger than the sum of its proper divisors (177665477).

12459748891 is an equidigital number, since it uses as much as digits as its factorization.

12459748891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30293.

The product of its digits is 5806080, while the sum is 58.

The spelling of 12459748891 in words is "twelve billion, four hundred fifty-nine million, seven hundred forty-eight thousand, eight hundred ninety-one".