2426839391999 has 4 divisors (see below), whose sum is σ = 2647461154920. Its totient is φ = 2206217629080.

The previous prime is 2426839391989. The next prime is 2426839392037. The reversal of 2426839391999 is 9991939386242.

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

It is a cyclic number.

It is not a de Polignac number, because 2426839391999 - 2⁴ = 2426839391983 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 (2426839391929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110310881444 + ... + 110310881465.

It is an arithmetic number, because the mean of its divisors is an integer number (661865288730).

Almost surely, 2^{2426839391999} is an apocalyptic number.

2426839391999 is a deficient number, since it is larger than the sum of its proper divisors (220621762921).

2426839391999 is a wasteful number, since it uses less digits than its factorization.

2426839391999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220621762920.

The product of its digits is 408146688, while the sum is 74.

The spelling of 2426839391999 in words is "two trillion, four hundred twenty-six billion, eight hundred thirty-nine million, three hundred ninety-one thousand, nine hundred ninety-nine".