12401717769 has 27 divisors (see below), whose sum is σ = 20842190733. Its totient is φ = 7085359512.

The previous prime is 12401717747. The next prime is 12401717773. The reversal of 12401717769 is 96771710421.

The square root of 12401717769 is 111363.

It is a perfect power (a square), and thus also a powerful number.

12401717769 is a `hidden beast` number, since 12 + 401 + 7 + 177 + 69 = 666.

It is not a de Polignac number, because 12401717769 - 2⁷ = 12401717641 is a prime.

It is a super-2 number, since 2×12401717769² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12401717869) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2335972 + ... + 2341274.

Almost surely, 2^12401717769 is an apocalyptic number.

12401717769 is the 111363-rd square number.

12401717769 is the 55682-nd centered octagonal number.

It is an amenable number.

12401717769 is a deficient number, since it is larger than the sum of its proper divisors (8440472964).

12401717769 is an frugal number, since it uses more digits than its factorization.

12401717769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10626 (or 5313 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The spelling of 12401717769 in words is "twelve billion, four hundred one million, seven hundred seventeen thousand, seven hundred sixty-nine".