12504455140 has 24 divisors (see below), whose sum is σ = 26272589112. Its totient is φ = 4999261440.

The previous prime is 12504455137. The next prime is 12504455143. The reversal of 12504455140 is 4155440521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12504455137) and next prime (12504455143).

It can be written as a sum of positive squares in 4 ways, for example, as 532594084 + 11971861056 = 23078^2 + 109416^2 .

It is a super-2 number, since 2×12504455140² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12504455143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116601 + ... + 196480.

It is an arithmetic number, because the mean of its divisors is an integer number (1094691213).

Almost surely, 2^12504455140 is an apocalyptic number.

12504455140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12504455140 is an abundant number, since it is smaller than the sum of its proper divisors (13768133972).

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

12504455140 is a wasteful number, since it uses less digits than its factorization.

12504455140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315087 (or 315085 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 12504455140 its reverse (4155440521), we get a palindrome (16659895661).

The spelling of 12504455140 in words is "twelve billion, five hundred four million, four hundred fifty-five thousand, one hundred forty".