1272485473639 has 2 divisors, whose sum is σ = 1272485473640. Its totient is φ = 1272485473638.

The previous prime is 1272485473631. The next prime is 1272485473703. The reversal of 1272485473639 is 9363745842721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1272485473639 - 2³ = 1272485473631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272485473631) 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 as a sum of consecutive naturals, namely, 636242736819 + 636242736820.

It is an arithmetic number, because the mean of its divisors is an integer number (636242736820).

Almost surely, 2^{1272485473639} is an apocalyptic number.

1272485473639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272485473639 is an equidigital number, since it uses as much as digits as its factorization.

1272485473639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 61.

The spelling of 1272485473639 in words is "one trillion, two hundred seventy-two billion, four hundred eighty-five million, four hundred seventy-three thousand, six hundred thirty-nine".