6834797936639 has 4 divisors (see below), whose sum is σ = 6850366952880. Its totient is φ = 6819228920400.

The previous prime is 6834797936587. The next prime is 6834797936651. The reversal of 6834797936639 is 9366397974386.

It is a happy number.

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 6834797936639 - 2²⁸ = 6834529501183 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 (6834797936699) 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, 7784507462 + ... + 7784508339.

It is an arithmetic number, because the mean of its divisors is an integer number (1712591738220).

Almost surely, 2^{6834797936639} is an apocalyptic number.

6834797936639 is a deficient number, since it is larger than the sum of its proper divisors (15569016241).

6834797936639 is a wasteful number, since it uses less digits than its factorization.

6834797936639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15569016240.

The product of its digits is 6666395904, while the sum is 80.

The spelling of 6834797936639 in words is "six trillion, eight hundred thirty-four billion, seven hundred ninety-seven million, nine hundred thirty-six thousand, six hundred thirty-nine".