20461304645264 has 20 divisors (see below), whose sum is σ = 45307174571904. Its totient is φ = 8769130562208.

The previous prime is 20461304645209. The next prime is 20461304645279. The reversal of 20461304645264 is 46254640316402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91345109912 + ... + 91345110135.

Almost surely, 2^{20461304645264} is an apocalyptic number.

It is an amenable number.

20461304645264 is an abundant number, since it is smaller than the sum of its proper divisors (24845869926640).

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

20461304645264 is a wasteful number, since it uses less digits than its factorization.

20461304645264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182690220062 (or 182690220056 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 20461304645264 in words is "twenty trillion, four hundred sixty-one billion, three hundred four million, six hundred forty-five thousand, two hundred sixty-four".