20602264666 has 8 divisors (see below), whose sum is σ = 30905702100. Its totient is φ = 10300363968.

The previous prime is 20602264643. The next prime is 20602264667. The reversal of 20602264666 is 66646220602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20455006441 + 147258225 = 143021^2 + 12135^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20602264667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350061 + ... + 404656.

Almost surely, 2^20602264666 is an apocalyptic number.

20602264666 is a deficient number, since it is larger than the sum of its proper divisors (10303437434).

20602264666 is a wasteful number, since it uses less digits than its factorization.

20602264666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768368.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 20602264666 in words is "twenty billion, six hundred two million, two hundred sixty-four thousand, six hundred sixty-six".