12132445431505 has 16 divisors (see below), whose sum is σ = 16665662436480. Its totient is φ = 8305951087872.

The previous prime is 12132445431481. The next prime is 12132445431553. The reversal of 12132445431505 is 50513454423121.

It is a cyclic number.

It is not a de Polignac number, because 12132445431505 - 2¹¹ = 12132445429457 is a prime.

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, 279979384 + ... + 280022713.

It is an arithmetic number, because the mean of its divisors is an integer number (1041603902280).

Almost surely, 2^{12132445431505} is an apocalyptic number.

It is an amenable number.

12132445431505 is a deficient number, since it is larger than the sum of its proper divisors (4533217004975).

12132445431505 is an equidigital number, since it uses as much as digits as its factorization.

12132445431505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560002728.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 12132445431505 its reverse (50513454423121), we get a palindrome (62645899854626).

The spelling of 12132445431505 in words is "twelve trillion, one hundred thirty-two billion, four hundred forty-five million, four hundred thirty-one thousand, five hundred five".