12278395622843 has 12 divisors (see below), whose sum is σ = 14283119284560. Its totient is φ = 10524274527312.

The previous prime is 12278395622777. The next prime is 12278395622869. The reversal of 12278395622843 is 34822659387221.

It is not a de Polignac number, because 12278395622843 - 2²⁴ = 12278378845627 is a prime.

It is a super-3 number, since 3×12278395622843³ (a number of 40 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12278395652843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8403713 + ... + 9755981.

It is an arithmetic number, because the mean of its divisors is an integer number (1190259940380).

Almost surely, 2^{12278395622843} is an apocalyptic number.

12278395622843 is a deficient number, since it is larger than the sum of its proper divisors (2004723661717).

12278395622843 is a wasteful number, since it uses less digits than its factorization.

12278395622843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537586 (or 1537579 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 62.

The spelling of 12278395622843 in words is "twelve trillion, two hundred seventy-eight billion, three hundred ninety-five million, six hundred twenty-two thousand, eight hundred forty-three".