1272929556159 has 8 divisors (see below), whose sum is σ = 1885821564720. Its totient is φ = 848619704088.

The previous prime is 1272929556139. The next prime is 1272929556163. The reversal of 1272929556159 is 9516559292721.

1272929556159 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 9 + 2 + 9 + 5 + 5 + 615 + 9 = 666.

It is not a de Polignac number, because 1272929556159 - 2²⁹ = 1272392685247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1272929556096 and 1272929556105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272929556109) 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 7 ways as a sum of consecutive naturals, for example, 23572769532 + ... + 23572769585.

It is an arithmetic number, because the mean of its divisors is an integer number (235727695590).

Almost surely, 2^{1272929556159} is an apocalyptic number.

1272929556159 is a deficient number, since it is larger than the sum of its proper divisors (612892008561).

1272929556159 is an equidigital number, since it uses as much as digits as its factorization.

1272929556159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47145539126 (or 47145539120 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 63.

The spelling of 1272929556159 in words is "one trillion, two hundred seventy-two billion, nine hundred twenty-nine million, five hundred fifty-six thousand, one hundred fifty-nine".