6839011899745 has 4 divisors (see below), whose sum is σ = 8206814279700. Its totient is φ = 5471209519792.

The previous prime is 6839011899739. The next prime is 6839011899763. The reversal of 6839011899745 is 5479981109386.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4874349930849 + 1964661968896 = 2207793^2 + 1401664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6839011899745 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683901189970 + ... + 683901189979.

It is an arithmetic number, because the mean of its divisors is an integer number (2051703569925).

Almost surely, 2^{6839011899745} is an apocalyptic number.

It is an amenable number.

6839011899745 is a deficient number, since it is larger than the sum of its proper divisors (1367802379955).

6839011899745 is a wasteful number, since it uses less digits than its factorization.

6839011899745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367802379954.

The product of its (nonzero) digits is 117573120, while the sum is 70.

The spelling of 6839011899745 in words is "six trillion, eight hundred thirty-nine billion, eleven million, eight hundred ninety-nine thousand, seven hundred forty-five".