12390452892 has 18 divisors (see below), whose sum is σ = 31320311568. Its totient is φ = 4130150952.

The previous prime is 12390452869. The next prime is 12390452917. The reversal of 12390452892 is 29825409321.

12390452892 is a `hidden beast` number, since 1 + 2 + 39 + 0 + 4 + 528 + 92 = 666.

12390452892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×12390452892³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172089588 + ... + 172089659.

Almost surely, 2^12390452892 is an apocalyptic number.

12390452892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12390452892 is an abundant number, since it is smaller than the sum of its proper divisors (18929858676).

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

12390452892 is a wasteful number, since it uses less digits than its factorization.

12390452892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344179257 (or 344179252 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 12390452892 in words is "twelve billion, three hundred ninety million, four hundred fifty-two thousand, eight hundred ninety-two".