12528471622 has 12 divisors (see below), whose sum is σ = 19201066380. Its totient is φ = 6130952036.

The previous prime is 12528471619. The next prime is 12528471629. The reversal of 12528471622 is 22617482521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12528471629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1413472 + ... + 1422307.

It is an arithmetic number, because the mean of its divisors is an integer number (1600088865).

Almost surely, 2^12528471622 is an apocalyptic number.

12528471622 is a deficient number, since it is larger than the sum of its proper divisors (6672594758).

12528471622 is an equidigital number, since it uses as much as digits as its factorization.

12528471622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835875 (or 2835828 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The spelling of 12528471622 in words is "twelve billion, five hundred twenty-eight million, four hundred seventy-one thousand, six hundred twenty-two".