20800250664567 has 8 divisors (see below), whose sum is σ = 30254910057600. Its totient is φ = 12606212523960.

The previous prime is 20800250664503. The next prime is 20800250664607. The reversal of 20800250664567 is 76546605200802.

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

It is not a de Polignac number, because 20800250664567 - 2⁶ = 20800250664503 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800250664367) 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, 315155313067 + ... + 315155313132.

It is an arithmetic number, because the mean of its divisors is an integer number (3781863757200).

Almost surely, 2^{20800250664567} is an apocalyptic number.

20800250664567 is a deficient number, since it is larger than the sum of its proper divisors (9454659393033).

20800250664567 is a wasteful number, since it uses less digits than its factorization.

20800250664567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630310626213.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 20800250664567 in words is "twenty trillion, eight hundred billion, two hundred fifty million, six hundred sixty-four thousand, five hundred sixty-seven".