20869000486161 has 4 divisors (see below), whose sum is σ = 27825333981552. Its totient is φ = 13912666990772.

The previous prime is 20869000486099. The next prime is 20869000486163. The reversal of 20869000486161 is 16168400096802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20869000486161 - 2²⁹ = 20868463615249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20869000486163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3478166747691 + ... + 3478166747696.

It is an arithmetic number, because the mean of its divisors is an integer number (6956333495388).

Almost surely, 2^{20869000486161} is an apocalyptic number.

It is an amenable number.

20869000486161 is a deficient number, since it is larger than the sum of its proper divisors (6956333495391).

20869000486161 is an equidigital number, since it uses as much as digits as its factorization.

20869000486161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956333495390.

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 20869000486161 in words is "twenty trillion, eight hundred sixty-nine billion, four hundred eighty-six thousand, one hundred sixty-one".