20364241820 has 24 divisors (see below), whose sum is σ = 46054516704. Its totient is φ = 7519104576.

The previous prime is 20364241801. The next prime is 20364241829. The reversal of 20364241820 is 2814246302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20364241829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39161744 + ... + 39162263.

It is an arithmetic number, because the mean of its divisors is an integer number (1918938196).

Almost surely, 2^20364241820 is an apocalyptic number.

20364241820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20364241820 is an abundant number, since it is smaller than the sum of its proper divisors (25690274884).

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

20364241820 is a wasteful number, since it uses less digits than its factorization.

20364241820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78324029 (or 78324027 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 20364241820 in words is "twenty billion, three hundred sixty-four million, two hundred forty-one thousand, eight hundred twenty".