1228278432873 has 16 divisors (see below), whose sum is σ = 1645512247296. Its totient is φ = 814957545360.

The previous prime is 1228278432791. The next prime is 1228278432907. The reversal of 1228278432873 is 3782348728221.

It is not a de Polignac number, because 1228278432873 - 2⁸ = 1228278432617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228278437873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595461 + ... + 1676642.

It is an arithmetic number, because the mean of its divisors is an integer number (102844515456).

Almost surely, 2^{1228278432873} is an apocalyptic number.

It is an amenable number.

1228278432873 is a deficient number, since it is larger than the sum of its proper divisors (417233814423).

1228278432873 is a wasteful number, since it uses less digits than its factorization.

1228278432873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272964.

The product of its digits is 14450688, while the sum is 57.

The spelling of 1228278432873 in words is "one trillion, two hundred twenty-eight billion, two hundred seventy-eight million, four hundred thirty-two thousand, eight hundred seventy-three".