12456901344789 has 12 divisors (see below), whose sum is σ = 19629056664672. Its totient is φ = 7549637178600.

The previous prime is 12456901344733. The next prime is 12456901344809. The reversal of 12456901344789 is 98744310965421.

12456901344789 is a `hidden beast` number, since 1 + 2 + 45 + 6 + 90 + 1 + 34 + 478 + 9 = 666.

It is not a de Polignac number, because 12456901344789 - 2¹⁷ = 12456901213717 is a prime.

It is a super-2 number, since 2×12456901344789² (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 (12456901344889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62913643057 + ... + 62913643254.

It is an arithmetic number, because the mean of its divisors is an integer number (1635754722056).

It is a 2-persistent number, because it is pandigital, and so is 2⋅12456901344789 = 24913802689578, but 3⋅12456901344789 = 37370704034367 is not.

Almost surely, 2^{12456901344789} is an apocalyptic number.

It is an amenable number.

12456901344789 is a deficient number, since it is larger than the sum of its proper divisors (7172155319883).

12456901344789 is a wasteful number, since it uses less digits than its factorization.

12456901344789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125827286328 (or 125827286325 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 12456901344789 in words is "twelve trillion, four hundred fifty-six billion, nine hundred one million, three hundred forty-four thousand, seven hundred eighty-nine".