20455454424 has 32 divisors (see below), whose sum is σ = 51263694000. Its totient is φ = 6801810432.

The previous prime is 20455454423. The next prime is 20455454431. The reversal of 20455454424 is 42445455402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455454423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1032129 + ... + 1051760.

Almost surely, 2^20455454424 is an apocalyptic number.

20455454424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20455454424 is an abundant number, since it is smaller than the sum of its proper divisors (30808239576).

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

20455454424 is a wasteful number, since it uses less digits than its factorization.

20455454424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084307 (or 2084303 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 39.

The spelling of 20455454424 in words is "twenty billion, four hundred fifty-five million, four hundred fifty-four thousand, four hundred twenty-four".