12641808550 has 96 divisors (see below), whose sum is σ = 28638738432. Its totient is φ = 4057553280.

The previous prime is 12641808497. The next prime is 12641808551. The reversal of 12641808550 is 5580814621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641808551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 361644 + ... + 395056.

It is an arithmetic number, because the mean of its divisors is an integer number (298320192).

Almost surely, 2^12641808550 is an apocalyptic number.

12641808550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12641808550 is an abundant number, since it is smaller than the sum of its proper divisors (15996929882).

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

12641808550 is a wasteful number, since it uses less digits than its factorization.

12641808550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33502 (or 33497 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 12641808550 in words is "twelve billion, six hundred forty-one million, eight hundred eight thousand, five hundred fifty".