20554154424 has 96 divisors (see below), whose sum is σ = 58305031200. Its totient is φ = 6528994560.

The previous prime is 20554154389. The next prime is 20554154429. The reversal of 20554154424 is 42445145502.

20554154424 is a `hidden beast` number, since 2 + 0 + 55 + 41 + 544 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554154429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 422394 + ... + 468534.

It is an arithmetic number, because the mean of its divisors is an integer number (607344075).

Almost surely, 2^20554154424 is an apocalyptic number.

20554154424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20554154424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29152515600).

20554154424 is an abundant number, since it is smaller than the sum of its proper divisors (37750876776).

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

20554154424 is a wasteful number, since it uses less digits than its factorization.

20554154424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46445 (or 46438 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 20554154424 its reverse (42445145502), we get a palindrome (62999299926).

The spelling of 20554154424 in words is "twenty billion, five hundred fifty-four million, one hundred fifty-four thousand, four hundred twenty-four".