20393772383 has 4 divisors (see below), whose sum is σ = 20639480568. Its totient is φ = 20148064200.

The previous prime is 20393772359. The next prime is 20393772409. The reversal of 20393772383 is 38327739302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20393772383 - 2³⁰ = 19320030559 is a prime.

It is a super-2 number, since 2×20393772383² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20393772353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122853968 + ... + 122854133.

It is an arithmetic number, because the mean of its divisors is an integer number (5159870142).

Almost surely, 2^20393772383 is an apocalyptic number.

20393772383 is a deficient number, since it is larger than the sum of its proper divisors (245708185).

20393772383 is an equidigital number, since it uses as much as digits as its factorization.

20393772383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245708184.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The spelling of 20393772383 in words is "twenty billion, three hundred ninety-three million, seven hundred seventy-two thousand, three hundred eighty-three".