12456717522403 has 24 divisors (see below), whose sum is σ = 15923167901424. Its totient is φ = 9635682470400.

The previous prime is 12456717522377. The next prime is 12456717522419. The reversal of 12456717522403 is 30422571765421.

It is a happy number.

12456717522403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12456717522403 - 2³⁷ = 12319278568931 is a prime.

It is a super-2 number, since 2×12456717522403² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (12456717522493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84272118 + ... + 84419803.

It is an arithmetic number, because the mean of its divisors is an integer number (663465329226).

Almost surely, 2^{12456717522403} is an apocalyptic number.

12456717522403 is a deficient number, since it is larger than the sum of its proper divisors (3466450379021).

12456717522403 is a wasteful number, since it uses less digits than its factorization.

12456717522403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168692083 (or 168692076 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 12456717522403 in words is "twelve trillion, four hundred fifty-six billion, seven hundred seventeen million, five hundred twenty-two thousand, four hundred three".