12605993454 has 32 divisors (see below), whose sum is σ = 25694547840. Its totient is φ = 4121878112.

The previous prime is 12605993453. The next prime is 12605993471. The reversal of 12605993454 is 45439950621.

12605993454 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12605993454² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605993453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127192 + ... + 203444.

It is an arithmetic number, because the mean of its divisors is an integer number (802954620).

Almost surely, 2^12605993454 is an apocalyptic number.

12605993454 is an abundant number, since it is smaller than the sum of its proper divisors (13088554386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12605993454 is a wasteful number, since it uses less digits than its factorization.

12605993454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76784.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 12605993454 in words is "twelve billion, six hundred five million, nine hundred ninety-three thousand, four hundred fifty-four".