165222767008 has 96 divisors (see below), whose sum is σ = 353739442896. Its totient is φ = 75512414208.

The previous prime is 165222766999. The next prime is 165222767023. The reversal of 165222767008 is 800767222561.

It can be written as a sum of positive squares in 8 ways, for example, as 121820544784 + 43402222224 = 349028^2 + 208332^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18491310 + ... + 18500242.

Almost surely, 2^165222767008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165222767008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176869721448).

165222767008 is an abundant number, since it is smaller than the sum of its proper divisors (188516675888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165222767008 is a wasteful number, since it uses less digits than its factorization.

165222767008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9386 (or 9378 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

Adding to 165222767008 its reverse (800767222561), we get a palindrome (965989989569).

The spelling of 165222767008 in words is "one hundred sixty-five billion, two hundred twenty-two million, seven hundred sixty-seven thousand, eight".