20554243232000 has 144 divisors (see below), whose sum is σ = 52968818775600. Its totient is φ = 7938190131200.

The previous prime is 20554243231999. The next prime is 20554243232051. The reversal of 20554243232000 is 23234245502.

It can be written as a sum of positive squares in 8 ways, for example, as 2669328580864 + 17884914651136 = 1633808^2 + 4229056^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10146485 + ... + 12002484.

It is an arithmetic number, because the mean of its divisors is an integer number (367839019275).

Almost surely, 2^{20554243232000} is an apocalyptic number.

20554243232000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20554243232000 is an abundant number, since it is smaller than the sum of its proper divisors (32414575543600).

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

20554243232000 is an equidigital number, since it uses as much as digits as its factorization.

20554243232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22149029 (or 22149005 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 20554243232000 its reverse (23234245502), we get a palindrome (20577477477502).

The spelling of 20554243232000 in words is "twenty trillion, five hundred fifty-four billion, two hundred forty-three million, two hundred thirty-two thousand".