20533003544 has 8 divisors (see below), whose sum is σ = 38499381660. Its totient is φ = 10266501768.

The previous prime is 20533003541. The next prime is 20533003567. The reversal of 20533003544 is 44530033502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533003541) by changing a digit.

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, 1283312714 + ... + 1283312729.

Almost surely, 2^20533003544 is an apocalyptic number.

It is an amenable number.

20533003544 is a deficient number, since it is larger than the sum of its proper divisors (17966378116).

20533003544 is a wasteful number, since it uses less digits than its factorization.

20533003544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566625449 (or 2566625445 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 29.

The spelling of 20533003544 in words is "twenty billion, five hundred thirty-three million, three thousand, five hundred forty-four".