12540745828 has 48 divisors (see below), whose sum is σ = 24442435584. Its totient is φ = 5590869120.

The previous prime is 12540745801. The next prime is 12540745829. The reversal of 12540745828 is 82854704521.

It is not an unprimeable number, because it can be changed into a prime (12540745829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 890901 + ... + 904867.

It is an arithmetic number, because the mean of its divisors is an integer number (509217408).

Almost surely, 2^12540745828 is an apocalyptic number.

It is an amenable number.

12540745828 is a deficient number, since it is larger than the sum of its proper divisors (11901689756).

12540745828 is a wasteful number, since it uses less digits than its factorization.

12540745828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14572 (or 14570 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 46.

The spelling of 12540745828 in words is "twelve billion, five hundred forty million, seven hundred forty-five thousand, eight hundred twenty-eight".