11722845672784 has 20 divisors (see below), whose sum is σ = 23326878721684. Its totient is φ = 5703006002688.

The previous prime is 11722845672751. The next prime is 11722845672787. The reversal of 11722845672784 is 48727654822711.

It can be written as a sum of positive squares in 2 ways, for example, as 8257737882384 + 3465107790400 = 2873628^2 + 1861480^2 .

It is a super-2 number, since 2×11722845672784² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11722845672787) 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, 9901051497 + ... + 9901052680.

Almost surely, 2^{11722845672784} is an apocalyptic number.

It is an amenable number.

11722845672784 is a deficient number, since it is larger than the sum of its proper divisors (11604033048900).

11722845672784 is a wasteful number, since it uses less digits than its factorization.

11722845672784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19802104222 (or 19802104216 counting only the distinct ones).

The product of its digits is 84295680, while the sum is 64.

The spelling of 11722845672784 in words is "eleven trillion, seven hundred twenty-two billion, eight hundred forty-five million, six hundred seventy-two thousand, seven hundred eighty-four".