12569432945 has 8 divisors (see below), whose sum is σ = 15085571136. Its totient is φ = 10054045296.

The previous prime is 12569432929. The next prime is 12569432947. The reversal of 12569432945 is 54923496521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12569432945 - 2⁴ = 12569432929 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12569432893 and 12569432902.

It is not an unprimeable number, because it can be changed into a prime (12569432947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150107 + ... + 218336.

It is an arithmetic number, because the mean of its divisors is an integer number (1885696392).

Almost surely, 2^12569432945 is an apocalyptic number.

It is an amenable number.

12569432945 is a deficient number, since it is larger than the sum of its proper divisors (2516138191).

12569432945 is an equidigital number, since it uses as much as digits as its factorization.

12569432945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375271.

The product of its digits is 2332800, while the sum is 50.

The spelling of 12569432945 in words is "twelve billion, five hundred sixty-nine million, four hundred thirty-two thousand, nine hundred forty-five".