10642544641 has 4 divisors (see below), whose sum is σ = 10649900992. Its totient is φ = 10635188292.

The previous prime is 10642544569. The next prime is 10642544681. The reversal of 10642544641 is 14644524601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10642544641 - 2¹¹ = 10642542593 is a prime.

It is a super-2 number, since 2×10642544641² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10642544641.

It is not an unprimeable number, because it can be changed into a prime (10642544681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3676005 + ... + 3678898.

It is an arithmetic number, because the mean of its divisors is an integer number (2662475248).

Almost surely, 2^10642544641 is an apocalyptic number.

It is an amenable number.

10642544641 is a deficient number, since it is larger than the sum of its proper divisors (7356351).

10642544641 is an equidigital number, since it uses as much as digits as its factorization.

10642544641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7356350.

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 10642544641 in words is "ten billion, six hundred forty-two million, five hundred forty-four thousand, six hundred forty-one".