20733473491 has 8 divisors (see below), whose sum is σ = 20885216000. Its totient is φ = 20582206920.

The previous prime is 20733473459. The next prime is 20733473539. The reversal of 20733473491 is 19437433702.

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

It is a cyclic number.

It is not a de Polignac number, because 20733473491 - 2⁵ = 20733473459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20733473191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31305 + ... + 206026.

It is an arithmetic number, because the mean of its divisors is an integer number (2610652000).

Almost surely, 2^20733473491 is an apocalyptic number.

20733473491 is a deficient number, since it is larger than the sum of its proper divisors (151742509).

20733473491 is a wasteful number, since it uses less digits than its factorization.

20733473491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237969.

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 20733473491 in words is "twenty billion, seven hundred thirty-three million, four hundred seventy-three thousand, four hundred ninety-one".