20200442045 has 16 divisors (see below), whose sum is σ = 28116951168. Its totient is φ = 13644987840.

The previous prime is 20200442039. The next prime is 20200442057. The reversal of 20200442045 is 54024400202.

It is not a de Polignac number, because 20200442045 - 2⁴ = 20200442029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20200442045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4304786 + ... + 4309475.

It is an arithmetic number, because the mean of its divisors is an integer number (1757309448).

Almost surely, 2^20200442045 is an apocalyptic number.

It is an amenable number.

20200442045 is a deficient number, since it is larger than the sum of its proper divisors (7916509123).

20200442045 is an equidigital number, since it uses as much as digits as its factorization.

20200442045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8614340.

The product of its (nonzero) digits is 2560, while the sum is 23.

Adding to 20200442045 its reverse (54024400202), we get a palindrome (74224842247).

The spelling of 20200442045 in words is "twenty billion, two hundred million, four hundred forty-two thousand, forty-five".