20530423104 has 56 divisors (see below), whose sum is σ = 54411067200. Its totient is φ = 6832011264.

The previous prime is 20530423087. The next prime is 20530423141. The reversal of 20530423104 is 40132403502.

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 7 ways as a sum of consecutive naturals, for example, 25752 + ... + 204264.

It is an arithmetic number, because the mean of its divisors is an integer number (971626200).

Almost surely, 2^20530423104 is an apocalyptic number.

20530423104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20530423104 is an abundant number, since it is smaller than the sum of its proper divisors (33880644096).

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

20530423104 is a wasteful number, since it uses less digits than its factorization.

20530423104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179127 (or 179117 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20530423104 its reverse (40132403502), we get a palindrome (60662826606).

The spelling of 20530423104 in words is "twenty billion, five hundred thirty million, four hundred twenty-three thousand, one hundred four".