1227273477279 has 32 divisors (see below), whose sum is σ = 1790719580160. Its totient is φ = 744293836800.

The previous prime is 1227273477277. The next prime is 1227273477289. The reversal of 1227273477279 is 9727743727221.

It is a happy number.

It is not a de Polignac number, because 1227273477279 - 2¹ = 1227273477277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227273477277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 803607 + ... + 1760775.

It is an arithmetic number, because the mean of its divisors is an integer number (55959986880).

Almost surely, 2^{1227273477279} is an apocalyptic number.

1227273477279 is a deficient number, since it is larger than the sum of its proper divisors (563446102881).

1227273477279 is a wasteful number, since it uses less digits than its factorization.

1227273477279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958031.

The product of its digits is 29042496, while the sum is 60.

The spelling of 1227273477279 in words is "one trillion, two hundred twenty-seven billion, two hundred seventy-three million, four hundred seventy-seven thousand, two hundred seventy-nine".