162644835799 has 2 divisors, whose sum is σ = 162644835800. Its totient is φ = 162644835798.

The previous prime is 162644835797. The next prime is 162644835803. The reversal of 162644835799 is 997538446261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162644835799 - 2¹ = 162644835797 is a prime.

It is a super-2 number, since 2×162644835799² (a number of 23 digits) contains 22 as substring.

Together with 162644835797, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 162644835799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162644835797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81322417899 + 81322417900.

It is an arithmetic number, because the mean of its divisors is an integer number (81322417900).

Almost surely, 2^162644835799 is an apocalyptic number.

162644835799 is a deficient number, since it is larger than the sum of its proper divisors (1).

162644835799 is an equidigital number, since it uses as much as digits as its factorization.

162644835799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 64.

The spelling of 162644835799 in words is "one hundred sixty-two billion, six hundred forty-four million, eight hundred thirty-five thousand, seven hundred ninety-nine".