20110423104 has 84 divisors (see below), whose sum is σ = 58432647676. Its totient is φ = 6611632128.

The previous prime is 20110423093. The next prime is 20110423153. The reversal of 20110423104 is 40132401102.

It can be written as a sum of positive squares in 2 ways, for example, as 7250863104 + 12859560000 = 85152^2 + 113400^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197089 + ... + 281184.

Almost surely, 2^20110423104 is an apocalyptic number.

20110423104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20110423104 is an abundant number, since it is smaller than the sum of its proper divisors (38322224572).

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

20110423104 is a wasteful number, since it uses less digits than its factorization.

20110423104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478364 (or 478351 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20110423104 its reverse (40132401102), we get a palindrome (60242824206).

The spelling of 20110423104 in words is "twenty billion, one hundred ten million, four hundred twenty-three thousand, one hundred four".