162644868566 has 4 divisors (see below), whose sum is σ = 243967302852. Its totient is φ = 81322434282.

The previous prime is 162644868511. The next prime is 162644868569. The reversal of 162644868566 is 665868446261.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 162644868499 and 162644868508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162644868569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40661217140 + ... + 40661217143.

It is an arithmetic number, because the mean of its divisors is an integer number (60991825713).

Almost surely, 2^162644868566 is an apocalyptic number.

162644868566 is a deficient number, since it is larger than the sum of its proper divisors (81322434286).

162644868566 is an equidigital number, since it uses as much as digits as its factorization.

162644868566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81322434285.

The product of its digits is 79626240, while the sum is 62.

The spelling of 162644868566 in words is "one hundred sixty-two billion, six hundred forty-four million, eight hundred sixty-eight thousand, five hundred sixty-six".