644600110002 has 16 divisors (see below), whose sum is σ = 1289223417792. Its totient is φ = 214862837040.

The previous prime is 644600109961. The next prime is 644600110057. The reversal of 644600110002 is 200011006446.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594313 + ... + 1281564.

It is an arithmetic number, because the mean of its divisors is an integer number (80576463612).

Almost surely, 2^644600110002 is an apocalyptic number.

644600110002 is an abundant number, since it is smaller than the sum of its proper divisors (644623307790).

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

644600110002 is a wasteful number, since it uses less digits than its factorization.

644600110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933153.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 644600110002 its reverse (200011006446), we get a palindrome (844611116448).

The spelling of 644600110002 in words is "six hundred forty-four billion, six hundred million, one hundred ten thousand, two".