20020773599 has 4 divisors (see below), whose sum is σ = 20022234960. Its totient is φ = 20019312240.

The previous prime is 20020773559. The next prime is 20020773601. The reversal of 20020773599 is 99537702002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020773599 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 (20020773559) 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, 709934 + ... + 737595.

It is an arithmetic number, because the mean of its divisors is an integer number (5005558740).

Almost surely, 2^20020773599 is an apocalyptic number.

20020773599 is a deficient number, since it is larger than the sum of its proper divisors (1461361).

20020773599 is a wasteful number, since it uses less digits than its factorization.

20020773599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461360.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 20020773599 in words is "twenty billion, twenty million, seven hundred seventy-three thousand, five hundred ninety-nine".