20413423320 has 64 divisors (see below), whose sum is σ = 62154328320. Its totient is φ = 5362329984.

The previous prime is 20413423301. The next prime is 20413423333. The reversal of 20413423320 is 2332431402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1261452 + ... + 1277531.

It is an arithmetic number, because the mean of its divisors is an integer number (971161380).

Almost surely, 2^20413423320 is an apocalyptic number.

20413423320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413423320 is an abundant number, since it is smaller than the sum of its proper divisors (41740905000).

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

20413423320 is a wasteful number, since it uses less digits than its factorization.

20413423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539064 (or 2539060 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20413423320 its reverse (2332431402), we get a palindrome (22745854722).

The spelling of 20413423320 in words is "twenty billion, four hundred thirteen million, four hundred twenty-three thousand, three hundred twenty".