78852571219 has 4 divisors (see below), whose sum is σ = 78865048296. Its totient is φ = 78840094144.

The previous prime is 78852571177. The next prime is 78852571271. The reversal of 78852571219 is 91217525887.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91217525887 = 337 ⋅270675151.

It is a cyclic number.

It is not a de Polignac number, because 78852571219 - 2⁹ = 78852570707 is a prime.

It is a super-2 number, since 2×78852571219² (a number of 23 digits) contains 22 as substring.

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 78852571219.

It is not an unprimeable number, because it can be changed into a prime (78852571319) 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, 6229054 + ... + 6241699.

It is an arithmetic number, because the mean of its divisors is an integer number (19716262074).

Almost surely, 2^78852571219 is an apocalyptic number.

78852571219 is a deficient number, since it is larger than the sum of its proper divisors (12477077).

78852571219 is a wasteful number, since it uses less digits than its factorization.

78852571219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12477076.

The product of its digits is 2822400, while the sum is 55.

The spelling of 78852571219 in words is "seventy-eight billion, eight hundred fifty-two million, five hundred seventy-one thousand, two hundred nineteen".