1272393545993 has 8 divisors (see below), whose sum is σ = 1318213473480. Its totient is φ = 1226703237760.

The previous prime is 1272393545977. The next prime is 1272393546019. The reversal of 1272393545993 is 3995453932721.

It can be written as a sum of positive squares in 4 ways, for example, as 234515495824 + 1037878050169 = 484268^2 + 1018763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272393545993 - 2⁴ = 1272393545977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272393545903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32384828 + ... + 32424093.

It is an arithmetic number, because the mean of its divisors is an integer number (164776684185).

Almost surely, 2^{1272393545993} is an apocalyptic number.

It is an amenable number.

1272393545993 is a deficient number, since it is larger than the sum of its proper divisors (45819927487).

1272393545993 is an equidigital number, since it uses as much as digits as its factorization.

1272393545993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64809627.

The product of its digits is 55112400, while the sum is 62.

The spelling of 1272393545993 in words is "one trillion, two hundred seventy-two billion, three hundred ninety-three million, five hundred forty-five thousand, nine hundred ninety-three".