20445206451450 has 48 divisors (see below), whose sum is σ = 55313576731296. Its totient is φ = 4956413684800.

The previous prime is 20445206451389. The next prime is 20445206451463. The reversal of 20445206451450 is 5415460254402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6195515457 + ... + 6195518756.

It is an arithmetic number, because the mean of its divisors is an integer number (1152366181902).

Almost surely, 2^{20445206451450} is an apocalyptic number.

20445206451450 is an abundant number, since it is smaller than the sum of its proper divisors (34868370279846).

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

20445206451450 is a wasteful number, since it uses less digits than its factorization.

20445206451450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12391034239 (or 12391034234 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 42.

The spelling of 20445206451450 in words is "twenty trillion, four hundred forty-five billion, two hundred six million, four hundred fifty-one thousand, four hundred fifty".