2643448412639 has 8 divisors (see below), whose sum is σ = 2649515000832. Its totient is φ = 2637382273240.

The previous prime is 2643448412587. The next prime is 2643448412653. The reversal of 2643448412639 is 9362148443462.

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 2643448412639 - 2¹² = 2643448408543 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 (2643448612639) 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, 13597052 + ... + 13790094.

It is an arithmetic number, because the mean of its divisors is an integer number (331189375104).

Almost surely, 2^{2643448412639} is an apocalyptic number.

2643448412639 is a deficient number, since it is larger than the sum of its proper divisors (6066588193).

2643448412639 is a wasteful number, since it uses less digits than its factorization.

2643448412639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224397.

The product of its digits is 23887872, while the sum is 56.

The spelling of 2643448412639 in words is "two trillion, six hundred forty-three billion, four hundred forty-eight million, four hundred twelve thousand, six hundred thirty-nine".