12641640623 has 8 divisors (see below), whose sum is σ = 13387326192. Its totient is φ = 11896183936.

The previous prime is 12641640617. The next prime is 12641640707. The reversal of 12641640623 is 32604614621.

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

It is a cyclic number.

It is not a de Polignac number, because 12641640623 - 2⁶ = 12641640559 is a prime.

It is a super-3 number, since 3×12641640623³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641660623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63836 + ... + 171342.

It is an arithmetic number, because the mean of its divisors is an integer number (1673415774).

Almost surely, 2^12641640623 is an apocalyptic number.

12641640623 is a deficient number, since it is larger than the sum of its proper divisors (745685569).

12641640623 is a wasteful number, since it uses less digits than its factorization.

12641640623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114441.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 12641640623 in words is "twelve billion, six hundred forty-one million, six hundred forty thousand, six hundred twenty-three".