8261327878 has 8 divisors (see below), whose sum is σ = 12392763768. Its totient is φ = 4130406624.

The previous prime is 8261327839. The next prime is 8261327951. The reversal of 8261327878 is 8787231628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85651 + ... + 154462.

It is an arithmetic number, because the mean of its divisors is an integer number (1549095471).

Almost surely, 2^8261327878 is an apocalyptic number.

8261327878 is a deficient number, since it is larger than the sum of its proper divisors (4131435890).

8261327878 is a wasteful number, since it uses less digits than its factorization.

8261327878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257318.

The product of its digits is 1806336, while the sum is 52.

The square root of 8261327878 is about 90891.8471481353. The cubic root of 8261327878 is about 2021.5444090456.

The spelling of 8261327878 in words is "eight billion, two hundred sixty-one million, three hundred twenty-seven thousand, eight hundred seventy-eight".