665162157223 has 16 divisors (see below), whose sum is σ = 707187783456. Its totient is φ = 623461580800.

The previous prime is 665162157221. The next prime is 665162157251. The reversal of 665162157223 is 322751261566.

It is a happy number.

665162157223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 665162157223 - 2¹ = 665162157221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665162157221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7181415 + ... + 7273447.

It is an arithmetic number, because the mean of its divisors is an integer number (44199236466).

Almost surely, 2^665162157223 is an apocalyptic number.

665162157223 is a deficient number, since it is larger than the sum of its proper divisors (42025626233).

665162157223 is a wasteful number, since it uses less digits than its factorization.

665162157223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93794.

The product of its digits is 907200, while the sum is 46.

The spelling of 665162157223 in words is "six hundred sixty-five billion, one hundred sixty-two million, one hundred fifty-seven thousand, two hundred twenty-three".