20423114440 has 64 divisors (see below), whose sum is σ = 48391848000. Its totient is φ = 7735875840.

The previous prime is 20423114399. The next prime is 20423114461. The reversal of 20423114440 is 4441132402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2321971 + ... + 2330749.

It is an arithmetic number, because the mean of its divisors is an integer number (756122625).

Almost surely, 2^20423114440 is an apocalyptic number.

20423114440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20423114440 is an abundant number, since it is smaller than the sum of its proper divisors (27968733560).

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

20423114440 is a wasteful number, since it uses less digits than its factorization.

20423114440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11870 (or 11866 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20423114440 its reverse (4441132402), we get a palindrome (24864246842).

The spelling of 20423114440 in words is "twenty billion, four hundred twenty-three million, one hundred fourteen thousand, four hundred forty".