20790097633 has 4 divisors (see below), whose sum is σ = 20790834480. Its totient is φ = 20789360788.

The previous prime is 20790097621. The next prime is 20790097637. The reversal of 20790097633 is 33679009702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20790097633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20790097637) 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, 324343 + ... + 383116.

It is an arithmetic number, because the mean of its divisors is an integer number (5197708620).

Almost surely, 2^20790097633 is an apocalyptic number.

It is an amenable number.

20790097633 is a deficient number, since it is larger than the sum of its proper divisors (736847).

20790097633 is an equidigital number, since it uses as much as digits as its factorization.

20790097633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736846.

The product of its (nonzero) digits is 428652, while the sum is 46.

The spelling of 20790097633 in words is "twenty billion, seven hundred ninety million, ninety-seven thousand, six hundred thirty-three".