6817861078 has 64 divisors (see below), whose sum is σ = 12304281600. Its totient is φ = 2830627296.

The previous prime is 6817861073. The next prime is 6817861079. The reversal of 6817861078 is 8701687186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6817861073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3319900 + ... + 3321952.

It is an arithmetic number, because the mean of its divisors is an integer number (192254400).

Almost surely, 2^6817861078 is an apocalyptic number.

6817861078 is a deficient number, since it is larger than the sum of its proper divisors (5486420522).

6817861078 is a wasteful number, since it uses less digits than its factorization.

6817861078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 6817861078 is about 82570.3401833855. The cubic root of 6817861078 is about 1896.1937724046.

The spelling of 6817861078 in words is "six billion, eight hundred seventeen million, eight hundred sixty-one thousand, seventy-eight".