12547189490 has 32 divisors (see below), whose sum is σ = 26087422464. Its totient is φ = 4294224640.

The previous prime is 12547189489. The next prime is 12547189583. The reversal of 12547189490 is 9498174521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3352994 + ... + 3356733.

It is an arithmetic number, because the mean of its divisors is an integer number (815231952).

Almost surely, 2^12547189490 is an apocalyptic number.

12547189490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12547189490 is an abundant number, since it is smaller than the sum of its proper divisors (13540232974).

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

12547189490 is a wasteful number, since it uses less digits than its factorization.

12547189490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709762.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 12547189490 in words is "twelve billion, five hundred forty-seven million, one hundred eighty-nine thousand, four hundred ninety".