2809939743381 has 8 divisors (see below), whose sum is σ = 3746594984800. Its totient is φ = 1873288832112.

The previous prime is 2809939743311. The next prime is 2809939743407. The reversal of 2809939743381 is 1833479399082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2809939743381 - 2⁷ = 2809939743253 is a prime.

It is a super-2 number, since 2×2809939743381² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2809939743311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008795 + ... + 2576343.

It is an arithmetic number, because the mean of its divisors is an integer number (468324373100).

Almost surely, 2^{2809939743381} is an apocalyptic number.

It is an amenable number.

2809939743381 is a deficient number, since it is larger than the sum of its proper divisors (936655241419).

2809939743381 is a wasteful number, since it uses less digits than its factorization.

2809939743381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165075.

The product of its (nonzero) digits is 70543872, while the sum is 66.

The spelling of 2809939743381 in words is "two trillion, eight hundred nine billion, nine hundred thirty-nine million, seven hundred forty-three thousand, three hundred eighty-one".