20644044602 has 4 divisors (see below), whose sum is σ = 30966066906. Its totient is φ = 10322022300.

The previous prime is 20644044583. The next prime is 20644044643.

20644044602 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16791235561 + 3852809041 = 129581^2 + 62071^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5161011149 + ... + 5161011152.

Almost surely, 2^20644044602 is an apocalyptic number.

20644044602 is a deficient number, since it is larger than the sum of its proper divisors (10322022304).

20644044602 is a wasteful number, since it uses less digits than its factorization.

20644044602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10322022303.

The product of its (nonzero) digits is 36864, while the sum is 32.

The spelling of 20644044602 in words is "twenty billion, six hundred forty-four million, forty-four thousand, six hundred two".