165553747632 has 480 divisors, whose sum is σ = 593455349760. Its totient is φ = 41908285440.

The previous prime is 165553747591. The next prime is 165553747637. The reversal of 165553747632 is 236747355561.

165553747632 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 537 + 4 + 76 + 32 = 666.

165553747632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165553747637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51588844 + ... + 51592052.

It is an arithmetic number, because the mean of its divisors is an integer number (1236365312).

Almost surely, 2^165553747632 is an apocalyptic number.

165553747632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165553747632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296727674880).

165553747632 is an abundant number, since it is smaller than the sum of its proper divisors (427901602128).

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

165553747632 is a wasteful number, since it uses less digits than its factorization.

165553747632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401 (or 3392 counting only the distinct ones).

The product of its digits is 15876000, while the sum is 54.

The spelling of 165553747632 in words is "one hundred sixty-five billion, five hundred fifty-three million, seven hundred forty-seven thousand, six hundred thirty-two".