12392705445 has 64 divisors (see below), whose sum is σ = 21800448000. Its totient is φ = 5988784896.

The previous prime is 12392705383. The next prime is 12392705449. The reversal of 12392705445 is 54450729321.

It is a happy number.

It is not a de Polignac number, because 12392705445 - 2¹⁷ = 12392574373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12392705397 and 12392705406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12392705449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 612196 + ... + 632114.

It is an arithmetic number, because the mean of its divisors is an integer number (340632000).

Almost surely, 2^12392705445 is an apocalyptic number.

12392705445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12392705445 is a deficient number, since it is larger than the sum of its proper divisors (9407742555).

12392705445 is a wasteful number, since it uses less digits than its factorization.

12392705445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20042.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 12392705445 in words is "twelve billion, three hundred ninety-two million, seven hundred five thousand, four hundred forty-five".