2644442840105 has 48 divisors (see below), whose sum is σ = 3543233379840. Its totient is φ = 1892910286080.

The previous prime is 2644442840087. The next prime is 2644442840119. The reversal of 2644442840105 is 5010482444462.

It is not a de Polignac number, because 2644442840105 - 2³⁰ = 2643369098281 is a prime.

It is a super-2 number, since 2×2644442840105² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21092534 + ... + 21217536.

It is an arithmetic number, because the mean of its divisors is an integer number (73817362080).

Almost surely, 2^{2644442840105} is an apocalyptic number.

It is an amenable number.

2644442840105 is a deficient number, since it is larger than the sum of its proper divisors (898790539735).

2644442840105 is a wasteful number, since it uses less digits than its factorization.

2644442840105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125582 (or 125571 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 44.

The spelling of 2644442840105 in words is "two trillion, six hundred forty-four billion, four hundred forty-two million, eight hundred forty thousand, one hundred five".