20039395450 has 12 divisors (see below), whose sum is σ = 37273275630. Its totient is φ = 8015758160.

The previous prime is 20039395423. The next prime is 20039395469. The reversal of 20039395450 is 5459393002.

It can be written as a sum of positive squares in 3 ways, for example, as 19242406089 + 796989361 = 138717^2 + 28231^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200393905 + ... + 200394004.

Almost surely, 2^20039395450 is an apocalyptic number.

20039395450 is a deficient number, since it is larger than the sum of its proper divisors (17233880180).

20039395450 is a wasteful number, since it uses less digits than its factorization.

20039395450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400787921 (or 400787916 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 20039395450 in words is "twenty billion, thirty-nine million, three hundred ninety-five thousand, four hundred fifty".