20451350520000 has 210 divisors, whose sum is σ = 73251682823748. Its totient is φ = 5453693376000.

The previous prime is 20451350519969. The next prime is 20451350520037. The reversal of 20451350520000 is 2505315402.

It is a happy number.

20451350520000 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 135 + 0 + 520 + 0 + 0 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 28044654 + ... + 28764653.

Almost surely, 2^{20451350520000} is an apocalyptic number.

20451350520000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20451350520000 is an abundant number, since it is smaller than the sum of its proper divisors (52800332303748).

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

20451350520000 is an equidigital number, since it uses as much as digits as its factorization.

20451350520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56809345 (or 56809317 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 20451350520000 its reverse (2505315402), we get a palindrome (20453855835402).

The spelling of 20451350520000 in words is "twenty trillion, four hundred fifty-one billion, three hundred fifty million, five hundred twenty thousand".