1227266617540 has 24 divisors (see below), whose sum is σ = 2577331233792. Its totient is φ = 490893059040.

The previous prime is 1227266617523. The next prime is 1227266617553. The reversal of 1227266617540 is 457166627221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92164 + ... + 1569403.

It is an arithmetic number, because the mean of its divisors is an integer number (107388801408).

Almost surely, 2^{1227266617540} is an apocalyptic number.

1227266617540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227266617540 is an abundant number, since it is smaller than the sum of its proper divisors (1350064616252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1227266617540 is a wasteful number, since it uses less digits than its factorization.

1227266617540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698507 (or 1698505 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 1227266617540 in words is "one trillion, two hundred twenty-seven billion, two hundred sixty-six million, six hundred seventeen thousand, five hundred forty".