1272997467585 has 128 divisors (see below), whose sum is σ = 2400840000000. Its totient is φ = 638180508672.

The previous prime is 1272997467559. The next prime is 1272997467607. The reversal of 1272997467585 is 5857647992721.

1272997467585 is a `hidden beast` number, since 1 + 2 + 7 + 29 + 97 + 467 + 58 + 5 = 666.

It is not a de Polignac number, because 1272997467585 - 2¹⁰ = 1272997466561 is a prime.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (533433600) is a multiple of the sum of its prime factors (3840).

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 653153191 + ... + 653155139.

It is an arithmetic number, because the mean of its divisors is an integer number (18756562500).

Almost surely, 2^{1272997467585} is an apocalyptic number.

1272997467585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1272997467585 is a deficient number, since it is larger than the sum of its proper divisors (1127842532415).

1272997467585 is a wasteful number, since it uses less digits than its factorization.

1272997467585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840 (or 3834 counting only the distinct ones).

The product of its digits is 533433600, while the sum is 72.

The spelling of 1272997467585 in words is "one trillion, two hundred seventy-two billion, nine hundred ninety-seven million, four hundred sixty-seven thousand, five hundred eighty-five".