11711412805 has 8 divisors (see below), whose sum is σ = 14156277912. Its totient is φ = 9300741888.

The previous prime is 11711412737. The next prime is 11711412821. The reversal of 11711412805 is 50821411711.

It can be written as a sum of positive squares in 4 ways, for example, as 3231581409 + 8479831396 = 56847^2 + 92086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11711412805 - 2¹⁷ = 11711281733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8547792 + ... + 8549161.

It is an arithmetic number, because the mean of its divisors is an integer number (1769534739).

Almost surely, 2^11711412805 is an apocalyptic number.

It is an amenable number.

11711412805 is a deficient number, since it is larger than the sum of its proper divisors (2444865107).

11711412805 is a wasteful number, since it uses less digits than its factorization.

11711412805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17097095.

The product of its (nonzero) digits is 2240, while the sum is 31.

The spelling of 11711412805 in words is "eleven billion, seven hundred eleven million, four hundred twelve thousand, eight hundred five".