11297781713905 has 4 divisors (see below), whose sum is σ = 13557338056692. Its totient is φ = 9038225371120.

The previous prime is 11297781713879. The next prime is 11297781713941. The reversal of 11297781713905 is 50931718779211.

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 4717510152289 + 6580271561616 = 2171983^2 + 2565204^2 .

It is not a de Polignac number, because 11297781713905 - 2²³ = 11297773325297 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1129778171386 + ... + 1129778171395.

It is an arithmetic number, because the mean of its divisors is an integer number (3389334514173).

Almost surely, 2^{11297781713905} is an apocalyptic number.

It is an amenable number.

11297781713905 is a deficient number, since it is larger than the sum of its proper divisors (2259556342787).

11297781713905 is an equidigital number, since it uses as much as digits as its factorization.

11297781713905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259556342786.

The product of its (nonzero) digits is 6667920, while the sum is 61.

The spelling of 11297781713905 in words is "eleven trillion, two hundred ninety-seven billion, seven hundred eighty-one million, seven hundred thirteen thousand, nine hundred five".