6785349121 has 4 divisors (see below), whose sum is σ = 6788365744. Its totient is φ = 6782332500.

The previous prime is 6785349101. The next prime is 6785349127. The reversal of 6785349121 is 1219435876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6785349121 - 2⁷ = 6785348993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6785349127) 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, 1504935 + ... + 1509436.

It is an arithmetic number, because the mean of its divisors is an integer number (1697091436).

Almost surely, 2^6785349121 is an apocalyptic number.

It is an amenable number.

6785349121 is a deficient number, since it is larger than the sum of its proper divisors (3016623).

6785349121 is a wasteful number, since it uses less digits than its factorization.

6785349121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016622.

The product of its digits is 362880, while the sum is 46.

The square root of 6785349121 is about 82373.2306092216. The cubic root of 6785349121 is about 1893.1748771755.

The spelling of 6785349121 in words is "six billion, seven hundred eighty-five million, three hundred forty-nine thousand, one hundred twenty-one".