11722345405 has 8 divisors (see below), whose sum is σ = 14169492792. Its totient is φ = 9309424128.

The previous prime is 11722345399. The next prime is 11722345433. The reversal of 11722345405 is 50454322711.

It can be written as a sum of positive squares in 4 ways, for example, as 3859267129 + 7863078276 = 62123^2 + 88674^2 .

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 11722345405 - 2⁵ = 11722345373 is a prime.

It is a super-2 number, since 2×11722345405² (a number of 21 digits) contains 22 as substring.

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, 8555772 + ... + 8557141.

It is an arithmetic number, because the mean of its divisors is an integer number (1771186599).

Almost surely, 2^11722345405 is an apocalyptic number.

It is an amenable number.

11722345405 is a deficient number, since it is larger than the sum of its proper divisors (2447147387).

11722345405 is a wasteful number, since it uses less digits than its factorization.

11722345405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17113055.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 11722345405 in words is "eleven billion, seven hundred twenty-two million, three hundred forty-five thousand, four hundred five".