6851133929 has 4 divisors (see below), whose sum is σ = 6996902784. Its totient is φ = 6705365076.

The previous prime is 6851133917. The next prime is 6851133967. The reversal of 6851133929 is 9293311586.

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 a de Polignac number, because none of the positive numbers 2^k-6851133929 is a prime.

It is a super-2 number, since 2×6851133929² = 93876072226189954082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 145768807 = 6851133929 / (6 + 8 + 5 + 1 + 1 + 3 + 3 + 9 + 2 + 9).

It is not an unprimeable number, because it can be changed into a prime (6851132929) 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, 72884357 + ... + 72884450.

It is an arithmetic number, because the mean of its divisors is an integer number (1749225696).

Almost surely, 2^6851133929 is an apocalyptic number.

It is an amenable number.

6851133929 is a deficient number, since it is larger than the sum of its proper divisors (145768855).

6851133929 is a wasteful number, since it uses less digits than its factorization.

6851133929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145768854.

The product of its digits is 349920, while the sum is 47.

The square root of 6851133929 is about 82771.5768183741. The cubic root of 6851133929 is about 1899.2733998228.

The spelling of 6851133929 in words is "six billion, eight hundred fifty-one million, one hundred thirty-three thousand, nine hundred twenty-nine".