20796947733 has 4 divisors (see below), whose sum is σ = 27729263648. Its totient is φ = 13864631820.

The previous prime is 20796947729. The next prime is 20796947767. The reversal of 20796947733 is 33774969702.

It is a happy number.

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 not a de Polignac number, because 20796947733 - 2² = 20796947729 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20796947833) 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, 3466157953 + ... + 3466157958.

It is an arithmetic number, because the mean of its divisors is an integer number (6932315912).

Almost surely, 2^20796947733 is an apocalyptic number.

It is an amenable number.

20796947733 is a deficient number, since it is larger than the sum of its proper divisors (6932315915).

20796947733 is an equidigital number, since it uses as much as digits as its factorization.

20796947733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6932315914.

The product of its (nonzero) digits is 12002256, while the sum is 57.

The spelling of 20796947733 in words is "twenty billion, seven hundred ninety-six million, nine hundred forty-seven thousand, seven hundred thirty-three".