8178272807 has 4 divisors (see below), whose sum is σ = 8659347696. Its totient is φ = 7697197920.

The previous prime is 8178272789. The next prime is 8178272833. The reversal of 8178272807 is 7082728718.

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

It is a cyclic number.

It is not a de Polignac number, because 8178272807 - 2¹² = 8178268711 is a prime.

It is a super-2 number, since 2×8178272807² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8178274807) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 240537419 + ... + 240537452.

It is an arithmetic number, because the mean of its divisors is an integer number (2164836924).

Almost surely, 2^8178272807 is an apocalyptic number.

8178272807 is a deficient number, since it is larger than the sum of its proper divisors (481074889).

8178272807 is a wasteful number, since it uses less digits than its factorization.

8178272807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481074888.

The product of its (nonzero) digits is 702464, while the sum is 50.

The square root of 8178272807 is about 90433.8034531336. The cubic root of 8178272807 is about 2014.7470620694.

The spelling of 8178272807 in words is "eight billion, one hundred seventy-eight million, two hundred seventy-two thousand, eight hundred seven".