20454201520000 has 160 divisors (see below), whose sum is σ = 51070619920320. Its totient is φ = 8157391872000.

The previous prime is 20454201519977. The next prime is 20454201520007. The reversal of 20454201520000 is 2510245402.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454201520007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26580657 + ... + 27339343.

It is an arithmetic number, because the mean of its divisors is an integer number (319191374502).

Almost surely, 2^{20454201520000} is an apocalyptic number.

20454201520000 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 20454201520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25535309960160).

20454201520000 is an abundant number, since it is smaller than the sum of its proper divisors (30616418400320).

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

20454201520000 is an frugal number, since it uses more digits than its factorization.

20454201520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759058 (or 759031 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20454201520000 its reverse (2510245402), we get a palindrome (20456711765402).

The spelling of 20454201520000 in words is "twenty trillion, four hundred fifty-four billion, two hundred one million, five hundred twenty thousand".