12456545000 has 80 divisors (see below), whose sum is σ = 29237594100. Its totient is φ = 4973760000.

The previous prime is 12456544993. The next prime is 12456545033. The reversal of 12456545000 is 54565421.

It can be written as a sum of positive squares in 10 ways, for example, as 34550884 + 12421994116 = 5878^2 + 111454^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3303116 + ... + 3306884.

Almost surely, 2^12456545000 is an apocalyptic number.

12456545000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12456545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14618797050).

12456545000 is an abundant number, since it is smaller than the sum of its proper divisors (16781049100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12456545000 is an equidigital number, since it uses as much as digits as its factorization.

12456545000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456 (or 4437 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 12456545000 in words is "twelve billion, four hundred fifty-six million, five hundred forty-five thousand".