1285047466709 has 4 divisors (see below), whose sum is σ = 1299486202380. Its totient is φ = 1270608731040.

The previous prime is 1285047466679. The next prime is 1285047466771. The reversal of 1285047466709 is 9076647405821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 650961739684 + 634085727025 = 806822^2 + 796295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285047466709 - 2¹⁶ = 1285047401173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285047466909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7219367702 + ... + 7219367879.

It is an arithmetic number, because the mean of its divisors is an integer number (324871550595).

Almost surely, 2^{1285047466709} is an apocalyptic number.

It is an amenable number.

1285047466709 is a deficient number, since it is larger than the sum of its proper divisors (14438735671).

1285047466709 is an equidigital number, since it uses as much as digits as its factorization.

1285047466709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14438735670.

The product of its (nonzero) digits is 20321280, while the sum is 59.

The spelling of 1285047466709 in words is "one trillion, two hundred eighty-five billion, forty-seven million, four hundred sixty-six thousand, seven hundred nine".