20454604800 has 768 divisors, whose sum is σ = 81913507200. Its totient is φ = 4404019200.

The previous prime is 20454604783. The next prime is 20454604837. The reversal of 20454604800 is 840645402.

It is a tau number, because it is divible by the number of its divisors (768).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 498892780 + ... + 498892820.

Almost surely, 2^20454604800 is an apocalyptic number.

20454604800 is a gapful number since it is divisible by the number (20) 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 20454604800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40956753600).

20454604800 is an abundant number, since it is smaller than the sum of its proper divisors (61458902400).

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

20454604800 is an equidigital number, since it uses as much as digits as its factorization.

20454604800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The spelling of 20454604800 in words is "twenty billion, four hundred fifty-four million, six hundred four thousand, eight hundred".