12552705681 has 8 divisors (see below), whose sum is σ = 16742690304. Its totient is φ = 8365595760.

The previous prime is 12552705643. The next prime is 12552705713. The reversal of 12552705681 is 18650725521.

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

It is not a de Polignac number, because 12552705681 - 2¹⁹ = 12552181393 is a prime.

It is a super-2 number, since 2×12552705681² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12552705601) 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, 708465 + ... + 725966.

It is an arithmetic number, because the mean of its divisors is an integer number (2092836288).

Almost surely, 2^12552705681 is an apocalyptic number.

It is an amenable number.

12552705681 is a deficient number, since it is larger than the sum of its proper divisors (4189984623).

12552705681 is a wasteful number, since it uses less digits than its factorization.

12552705681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437351.

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 12552705681 in words is "twelve billion, five hundred fifty-two million, seven hundred five thousand, six hundred eighty-one".