20864992451795 has 8 divisors (see below), whose sum is σ = 25055586165696. Its totient is φ = 16680263812416.

The previous prime is 20864992451767. The next prime is 20864992451801. The reversal of 20864992451795 is 59715429946802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20864992451795 - 2⁶ = 20864992451731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466260802 + ... + 1466275031.

It is an arithmetic number, because the mean of its divisors is an integer number (3131948270712).

Almost surely, 2^{20864992451795} is an apocalyptic number.

20864992451795 is a deficient number, since it is larger than the sum of its proper divisors (4190593713901).

20864992451795 is a wasteful number, since it uses less digits than its factorization.

20864992451795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2932537261.

The product of its (nonzero) digits is 391910400, while the sum is 71.

The spelling of 20864992451795 in words is "twenty trillion, eight hundred sixty-four billion, nine hundred ninety-two million, four hundred fifty-one thousand, seven hundred ninety-five".