12400032045 has 16 divisors (see below), whose sum is σ = 19843834752. Its totient is φ = 6612089280.

The previous prime is 12400032031. The next prime is 12400032079. The reversal of 12400032045 is 54023000421.

It is not a de Polignac number, because 12400032045 - 2⁵ = 12400032013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5359 + ... + 157571.

It is an arithmetic number, because the mean of its divisors is an integer number (1240239672).

Almost surely, 2^12400032045 is an apocalyptic number.

12400032045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12400032045 is a deficient number, since it is larger than the sum of its proper divisors (7443802707).

12400032045 is a wasteful number, since it uses less digits than its factorization.

12400032045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157652.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 12400032045 its reverse (54023000421), we get a palindrome (66423032466).

The spelling of 12400032045 in words is "twelve billion, four hundred million, thirty-two thousand, forty-five".