20665293002 has 4 divisors (see below), whose sum is σ = 30997939506. Its totient is φ = 10332646500.

The previous prime is 20665292971. The next prime is 20665293037. The reversal of 20665293002 is 20039256602.

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., 11312662321 + 9352630681 = 106361^2 + 96709^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5166323249 + ... + 5166323252.

Almost surely, 2^20665293002 is an apocalyptic number.

20665293002 is a deficient number, since it is larger than the sum of its proper divisors (10332646504).

20665293002 is a wasteful number, since it uses less digits than its factorization.

20665293002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332646503.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 20665293002 in words is "twenty billion, six hundred sixty-five million, two hundred ninety-three thousand, two".