20800040604869 has 8 divisors (see below), whose sum is σ = 20809111464960. Its totient is φ = 20790970134336.

The previous prime is 20800040604851. The next prime is 20800040604943. The reversal of 20800040604869 is 96840604000802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20800040604869 is a prime.

It is a super-2 number, since 2×20800040604869² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800040607869) 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 7 ways as a sum of consecutive naturals, for example, 171021722 + ... + 171143300.

It is an arithmetic number, because the mean of its divisors is an integer number (2601138933120).

Almost surely, 2^{20800040604869} is an apocalyptic number.

It is an amenable number.

20800040604869 is a deficient number, since it is larger than the sum of its proper divisors (9070860091).

20800040604869 is a wasteful number, since it uses less digits than its factorization.

20800040604869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194779.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 20800040604869 in words is "twenty trillion, eight hundred billion, forty million, six hundred four thousand, eight hundred sixty-nine".