1289297382911 has 4 divisors (see below), whose sum is σ = 1289300989032. Its totient is φ = 1289293776792.

The previous prime is 1289297382883. The next prime is 1289297383009. The reversal of 1289297382911 is 1192837929821.

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

It is a cyclic number.

It is not a de Polignac number, because 1289297382911 - 2²² = 1289293188607 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 (1289297382011) 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, 1199396 + ... + 2004281.

It is an arithmetic number, because the mean of its divisors is an integer number (322325247258).

Almost surely, 2^{1289297382911} is an apocalyptic number.

1289297382911 is a deficient number, since it is larger than the sum of its proper divisors (3606121).

1289297382911 is an equidigital number, since it uses as much as digits as its factorization.

1289297382911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3606120.

The product of its digits is 7838208, while the sum is 62.

The spelling of 1289297382911 in words is "one trillion, two hundred eighty-nine billion, two hundred ninety-seven million, three hundred eighty-two thousand, nine hundred eleven".