1223579272489 has 12 divisors (see below), whose sum is σ = 1423511284944. Its totient is φ = 1048661415144.

The previous prime is 1223579272453. The next prime is 1223579272537. The reversal of 1223579272489 is 9842729753221.

It is a happy number.

It is not a de Polignac number, because 1223579272489 - 2¹⁹ = 1223578748201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223579270489) 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, 1007319 + ... + 1860604.

It is an arithmetic number, because the mean of its divisors is an integer number (118625940412).

Almost surely, 2^{1223579272489} is an apocalyptic number.

It is an amenable number.

1223579272489 is a deficient number, since it is larger than the sum of its proper divisors (199932012455).

1223579272489 is an equidigital number, since it uses as much as digits as its factorization.

1223579272489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876644 (or 2876637 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 61.

The spelling of 1223579272489 in words is "one trillion, two hundred twenty-three billion, five hundred seventy-nine million, two hundred seventy-two thousand, four hundred eighty-nine".