20420220240204 has 24 divisors (see below), whose sum is σ = 47647608541680. Its totient is φ = 6806678939904.

The previous prime is 20420220240193. The next prime is 20420220240383. The reversal of 20420220240204 is 40204202202402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6240609 + ... + 8932280.

It is an arithmetic number, because the mean of its divisors is an integer number (1985317022570).

Almost surely, 2^{20420220240204} is an apocalyptic number.

It is an amenable number.

20420220240204 is an abundant number, since it is smaller than the sum of its proper divisors (27227388301476).

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

20420220240204 is a wasteful number, since it uses less digits than its factorization.

20420220240204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15285049 (or 15285047 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20420220240204 its reverse (40204202202402), we get a palindrome (60624422442606).

The spelling of 20420220240204 in words is "twenty trillion, four hundred twenty billion, two hundred twenty million, two hundred forty thousand, two hundred four".