1226089781279 has 6 divisors (see below), whose sum is σ = 1347685462200. Its totient is φ = 1114627073780.

The previous prime is 1226089781269. The next prime is 1226089781291. The reversal of 1226089781279 is 9721879806221.

It is not a de Polignac number, because 1226089781279 - 2⁴⁰ = 126578153503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226089781209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5066486579 + ... + 5066486820.

It is an arithmetic number, because the mean of its divisors is an integer number (224614243700).

Almost surely, 2^{1226089781279} is an apocalyptic number.

1226089781279 is a deficient number, since it is larger than the sum of its proper divisors (121595680921).

1226089781279 is a wasteful number, since it uses less digits than its factorization.

1226089781279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132973421 (or 10132973410 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 62.

The spelling of 1226089781279 in words is "one trillion, two hundred twenty-six billion, eighty-nine million, seven hundred eighty-one thousand, two hundred seventy-nine".