20454120000 has 700 divisors, whose sum is σ = 77770542960. Its totient is φ = 5311872000.

The previous prime is 20454119971. The next prime is 20454120047. The reversal of 20454120000 is 2145402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 191159947 + ... + 191160053.

Almost surely, 2^20454120000 is an apocalyptic number.

20454120000 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 20454120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38885271480).

20454120000 is an abundant number, since it is smaller than the sum of its proper divisors (57316422960).

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

20454120000 is an equidigital number, since it uses as much as digits as its factorization.

20454120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 20454120000 its reverse (2145402), we get a palindrome (20456265402).

The spelling of 20454120000 in words is "twenty billion, four hundred fifty-four million, one hundred twenty thousand".