1272672671247 has 20 divisors (see below), whose sum is σ = 1962480522816. Its totient is φ = 821079141120.

The previous prime is 1272672671239. The next prime is 1272672671279. The reversal of 1272672671247 is 7421762762721.

It is a happy number.

1272672671247 is a `hidden beast` number, since 1 + 272 + 6 + 72 + 67 + 1 + 247 = 666.

It is not a de Polignac number, because 1272672671247 - 2³ = 1272672671239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1272672671193 and 1272672671202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272672671297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 253416978 + ... + 253421999.

Almost surely, 2^{1272672671247} is an apocalyptic number.

1272672671247 is a deficient number, since it is larger than the sum of its proper divisors (689807851569).

1272672671247 is an equidigital number, since it uses as much as digits as its factorization.

1272672671247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506839020 (or 506839011 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 54.

The spelling of 1272672671247 in words is "one trillion, two hundred seventy-two billion, six hundred seventy-two million, six hundred seventy-one thousand, two hundred forty-seven".