8278432805 has 8 divisors (see below), whose sum is σ = 9966063744. Its totient is φ = 6601450000.

The previous prime is 8278432787. The next prime is 8278432837. The reversal of 8278432805 is 5082348728.

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

It is not a de Polignac number, because 8278432805 - 2¹⁶ = 8278367269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8278432805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2660321 + ... + 2663430.

It is an arithmetic number, because the mean of its divisors is an integer number (1245757968).

Almost surely, 2^8278432805 is an apocalyptic number.

It is an amenable number.

8278432805 is a deficient number, since it is larger than the sum of its proper divisors (1687630939).

8278432805 is a wasteful number, since it uses less digits than its factorization.

8278432805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324067.

The product of its (nonzero) digits is 860160, while the sum is 47.

The square root of 8278432805 is about 90985.8934395877. The cubic root of 8278432805 is about 2022.9386373844.

The spelling of 8278432805 in words is "eight billion, two hundred seventy-eight million, four hundred thirty-two thousand, eight hundred five".