8265605878 has 4 divisors (see below), whose sum is σ = 12398408820. Its totient is φ = 4132802938.

The previous prime is 8265605869. The next prime is 8265605893. The reversal of 8265605878 is 8785065628.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2066401468 + ... + 2066401471.

It is an arithmetic number, because the mean of its divisors is an integer number (3099602205).

Almost surely, 2^8265605878 is an apocalyptic number.

8265605878 is a deficient number, since it is larger than the sum of its proper divisors (4132802942).

8265605878 is a wasteful number, since it uses less digits than its factorization.

8265605878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132802941.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The square root of 8265605878 is about 90915.3775661741. The cubic root of 8265605878 is about 2021.8932905961.

The spelling of 8265605878 in words is "eight billion, two hundred sixty-five million, six hundred five thousand, eight hundred seventy-eight".