20456654424 has 32 divisors (see below), whose sum is σ = 52523844720. Its totient is φ = 6634590336.

The previous prime is 20456654423. The next prime is 20456654443. The reversal of 20456654424 is 42445665402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20456654423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11517499 + ... + 11519274.

Almost surely, 2^20456654424 is an apocalyptic number.

20456654424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20456654424 is an abundant number, since it is smaller than the sum of its proper divisors (32067190296).

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

20456654424 is a wasteful number, since it uses less digits than its factorization.

20456654424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23036819 (or 23036815 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 42.

The spelling of 20456654424 in words is "twenty billion, four hundred fifty-six million, six hundred fifty-four thousand, four hundred twenty-four".