20204202040 has 64 divisors (see below), whose sum is σ = 49607406720. Its totient is φ = 7344720000.

The previous prime is 20204202013. The next prime is 20204202049. The reversal of 20204202040 is 4020240202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204202049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2217895 + ... + 2226985.

It is an arithmetic number, because the mean of its divisors is an integer number (775115730).

Almost surely, 2^20204202040 is an apocalyptic number.

20204202040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20204202040 is an abundant number, since it is smaller than the sum of its proper divisors (29403204680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20204202040 is a wasteful number, since it uses less digits than its factorization.

20204202040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14164 (or 14160 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20204202040 its reverse (4020240202), we get a palindrome (24224442242).

The spelling of 20204202040 in words is "twenty billion, two hundred four million, two hundred two thousand, forty".