165502554224 has 40 divisors (see below), whose sum is σ = 375408243168. Its totient is φ = 69199672320.

The previous prime is 165502554223. The next prime is 165502554277. The reversal of 165502554224 is 422455205561.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165502554223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18016157 + ... + 18025340.

Almost surely, 2^165502554224 is an apocalyptic number.

165502554224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165502554224 is an abundant number, since it is smaller than the sum of its proper divisors (209905688944).

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

165502554224 is a wasteful number, since it uses less digits than its factorization.

165502554224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36041553 (or 36041547 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 165502554224 its reverse (422455205561), we get a palindrome (587957759785).

The spelling of 165502554224 in words is "one hundred sixty-five billion, five hundred two million, five hundred fifty-four thousand, two hundred twenty-four".