78857183227 has 8 divisors (see below), whose sum is σ = 79562428560. Its totient is φ = 78152067840.

The previous prime is 78857183173. The next prime is 78857183239. The reversal of 78857183227 is 72238175887.

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

It is a cyclic number.

It is not a de Polignac number, because 78857183227 - 2²⁷ = 78722965499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78857183257) 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, 1513327 + ... + 1564567.

It is an arithmetic number, because the mean of its divisors is an integer number (9945303570).

Almost surely, 2^78857183227 is an apocalyptic number.

78857183227 is a deficient number, since it is larger than the sum of its proper divisors (705245333).

78857183227 is a wasteful number, since it uses less digits than its factorization.

78857183227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64973.

The product of its digits is 10536960, while the sum is 58.

The spelling of 78857183227 in words is "seventy-eight billion, eight hundred fifty-seven million, one hundred eighty-three thousand, two hundred twenty-seven".