12543549790 has 64 divisors (see below), whose sum is σ = 24977600640. Its totient is φ = 4511232000.

The previous prime is 12543549779. The next prime is 12543549793. The reversal of 12543549790 is 9794534521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543549793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4178290 + ... + 4181290.

It is an arithmetic number, because the mean of its divisors is an integer number (390275010).

Almost surely, 2^12543549790 is an apocalyptic number.

12543549790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12543549790 is a deficient number, since it is larger than the sum of its proper divisors (12434050850).

12543549790 is a wasteful number, since it uses less digits than its factorization.

12543549790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 12543549790 in words is "twelve billion, five hundred forty-three million, five hundred forty-nine thousand, seven hundred ninety".