78327004857 has 8 divisors (see below), whose sum is σ = 104462124960. Its totient is φ = 52204944000.

The previous prime is 78327004843. The next prime is 78327004867. The reversal of 78327004857 is 75840072387.

It is a happy number.

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

It is not a de Polignac number, because 78327004857 - 2⁷ = 78327004729 is a prime.

It is a super-2 number, since 2×78327004857² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78327004817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250807 + ... + 3274812.

It is an arithmetic number, because the mean of its divisors is an integer number (13057765620).

Almost surely, 2^78327004857 is an apocalyptic number.

It is an amenable number.

78327004857 is a deficient number, since it is larger than the sum of its proper divisors (26135120103).

78327004857 is a wasteful number, since it uses less digits than its factorization.

78327004857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529623.

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 78327004857 in words is "seventy-eight billion, three hundred twenty-seven million, four thousand, eight hundred fifty-seven".