20040015773 has 4 divisors (see below), whose sum is σ = 20044180860. Its totient is φ = 20035850688.

The previous prime is 20040015767. The next prime is 20040015781. The reversal of 20040015773 is 37751004002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11729323204 + 8310692569 = 108302^2 + 91163^2 .

It is a cyclic number.

It is not a de Polignac number, because 20040015773 - 2¹⁴ = 20039999389 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 (20040015733) 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, 2075318 + ... + 2084951.

It is an arithmetic number, because the mean of its divisors is an integer number (5011045215).

Almost surely, 2^20040015773 is an apocalyptic number.

It is an amenable number.

20040015773 is a deficient number, since it is larger than the sum of its proper divisors (4165087).

20040015773 is an equidigital number, since it uses as much as digits as its factorization.

20040015773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165086.

The product of its (nonzero) digits is 5880, while the sum is 29.

Adding to 20040015773 its reverse (37751004002), we get a palindrome (57791019775).

The spelling of 20040015773 in words is "twenty billion, forty million, fifteen thousand, seven hundred seventy-three".