6885178851 has 4 divisors (see below), whose sum is σ = 9180238472. Its totient is φ = 4590119232.

The previous prime is 6885178847. The next prime is 6885178897. The reversal of 6885178851 is 1588715886.

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

It is not a de Polignac number, because 6885178851 - 2² = 6885178847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6885178791 and 6885178800.

It is not an unprimeable number, because it can be changed into a prime (6885678851) 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, 1147529806 + ... + 1147529811.

It is an arithmetic number, because the mean of its divisors is an integer number (2295059618).

Almost surely, 2^6885178851 is an apocalyptic number.

6885178851 is a deficient number, since it is larger than the sum of its proper divisors (2295059621).

6885178851 is a wasteful number, since it uses less digits than its factorization.

6885178851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295059620.

The product of its digits is 4300800, while the sum is 57.

The square root of 6885178851 is about 82976.9778372290. The cubic root of 6885178851 is about 1902.4141842752.

The spelling of 6885178851 in words is "six billion, eight hundred eighty-five million, one hundred seventy-eight thousand, eight hundred fifty-one".