20205423052 has 12 divisors (see below), whose sum is σ = 35363010816. Its totient is φ = 10101705680.

The previous prime is 20205422987. The next prime is 20205423079. The reversal of 20205423052 is 25032450202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205324 + ... + 287347.

It is an arithmetic number, because the mean of its divisors is an integer number (2946917568).

Almost surely, 2^20205423052 is an apocalyptic number.

It is an amenable number.

20205423052 is a deficient number, since it is larger than the sum of its proper divisors (15157587764).

20205423052 is a wasteful number, since it uses less digits than its factorization.

20205423052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502928 (or 502926 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 20205423052 its reverse (25032450202), we get a palindrome (45237873254).

The spelling of 20205423052 in words is "twenty billion, two hundred five million, four hundred twenty-three thousand, fifty-two".