12530532040 has 96 divisors (see below), whose sum is σ = 32325405480. Its totient is φ = 4354461696.

The previous prime is 12530532037. The next prime is 12530532059. The reversal of 12530532040 is 4023503521.

It can be written as a sum of positive squares in 12 ways, for example, as 605455236 + 11925076804 = 24606^2 + 109202^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12530531996 and 12530532014.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60402 + ... + 169438.

Almost surely, 2^12530532040 is an apocalyptic number.

12530532040 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 12530532040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16162702740).

12530532040 is an abundant number, since it is smaller than the sum of its proper divisors (19794873440).

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

12530532040 is a wasteful number, since it uses less digits than its factorization.

12530532040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109091 (or 109074 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 12530532040 in words is "twelve billion, five hundred thirty million, five hundred thirty-two thousand, forty".