20697323793 has 8 divisors (see below), whose sum is σ = 27619803456. Its totient is φ = 13786530000.

The previous prime is 20697323791. The next prime is 20697323797. The reversal of 20697323793 is 39732379602.

It is a happy number.

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

It is not a de Polignac number, because 20697323793 - 2¹ = 20697323791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20697323791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2917333 + ... + 2924418.

It is an arithmetic number, because the mean of its divisors is an integer number (3452475432).

Almost surely, 2^20697323793 is an apocalyptic number.

It is an amenable number.

20697323793 is a deficient number, since it is larger than the sum of its proper divisors (6922479663).

20697323793 is a wasteful number, since it uses less digits than its factorization.

20697323793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5842935.

The product of its (nonzero) digits is 2571912, while the sum is 51.

The spelling of 20697323793 in words is "twenty billion, six hundred ninety-seven million, three hundred twenty-three thousand, seven hundred ninety-three".