20446456546 has 16 divisors (see below), whose sum is σ = 32477983776. Its totient is φ = 9620617536.

The previous prime is 20446456543. The next prime is 20446456573. The reversal of 20446456546 is 64565464402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20446456496 and 20446456505.

It is not an unprimeable number, because it can be changed into a prime (20446456543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261505 + ... + 330571.

It is an arithmetic number, because the mean of its divisors is an integer number (2029873986).

Almost surely, 2^20446456546 is an apocalyptic number.

20446456546 is a deficient number, since it is larger than the sum of its proper divisors (12031527230).

20446456546 is a wasteful number, since it uses less digits than its factorization.

20446456546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77793.

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 20446456546 in words is "twenty billion, four hundred forty-six million, four hundred fifty-six thousand, five hundred forty-six".