20533511002 has 4 divisors (see below), whose sum is σ = 30800266506. Its totient is φ = 10266755500.

The previous prime is 20533510999. The next prime is 20533511021. The reversal of 20533511002 is 20011533502.

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., 14789235321 + 5744275681 = 121611^2 + 75791^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5133377749 + ... + 5133377752.

Almost surely, 2^20533511002 is an apocalyptic number.

20533511002 is a deficient number, since it is larger than the sum of its proper divisors (10266755504).

20533511002 is a wasteful number, since it uses less digits than its factorization.

20533511002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10266755503.

The product of its (nonzero) digits is 900, while the sum is 22.

The spelling of 20533511002 in words is "twenty billion, five hundred thirty-three million, five hundred eleven thousand, two".