20800040604867 has 48 divisors (see below), whose sum is σ = 31258083168000. Its totient is φ = 13316867638272.

The previous prime is 20800040604851. The next prime is 20800040604943. The reversal of 20800040604867 is 76840604000802.

It is not a de Polignac number, because 20800040604867 - 2⁴ = 20800040604851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20800040684867) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 16246734 + ... + 17480172.

It is an arithmetic number, because the mean of its divisors is an integer number (651210066000).

Almost surely, 2^{20800040604867} is an apocalyptic number.

20800040604867 is a deficient number, since it is larger than the sum of its proper divisors (10458042563133).

20800040604867 is a wasteful number, since it uses less digits than its factorization.

20800040604867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234140 (or 1234137 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 20800040604867 in words is "twenty trillion, eight hundred billion, forty million, six hundred four thousand, eight hundred sixty-seven".