12549267890 has 32 divisors (see below), whose sum is σ = 22880510640. Its totient is φ = 4955044864.

The previous prime is 12549267869. The next prime is 12549267901. The reversal of 12549267890 is 9876294521.

It can be written as a sum of positive squares in 8 ways, for example, as 46226401 + 12503041489 = 6799^2 + 111817^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537704 + ... + 560556.

Almost surely, 2^12549267890 is an apocalyptic number.

12549267890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12549267890 is a deficient number, since it is larger than the sum of its proper divisors (10331242750).

12549267890 is a wasteful number, since it uses less digits than its factorization.

12549267890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23566.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 12549267890 in words is "twelve billion, five hundred forty-nine million, two hundred sixty-seven thousand, eight hundred ninety".