12640822889 has 8 divisors (see below), whose sum is σ = 13572914688. Its totient is φ = 11729677120.

The previous prime is 12640822879. The next prime is 12640822903. The reversal of 12640822889 is 98822804621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12640822889 - 2²⁰ = 12639774313 is a prime.

It is a super-2 number, since 2×12640822889² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12640822829) 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, 5235257 + ... + 5237670.

It is an arithmetic number, because the mean of its divisors is an integer number (1696614336).

Almost surely, 2^12640822889 is an apocalyptic number.

It is an amenable number.

12640822889 is a deficient number, since it is larger than the sum of its proper divisors (932091799).

12640822889 is a wasteful number, since it uses less digits than its factorization.

12640822889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10473015.

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 12640822889 in words is "twelve billion, six hundred forty million, eight hundred twenty-two thousand, eight hundred eighty-nine".