165253555436 has 24 divisors (see below), whose sum is σ = 298200241584. Its totient is φ = 80091053120.

The previous prime is 165253555387. The next prime is 165253555483. The reversal of 165253555436 is 634555352561.

It is a happy number.

165253555436 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4678175 + ... + 4713366.

It is an arithmetic number, because the mean of its divisors is an integer number (12425010066).

Almost surely, 2^165253555436 is an apocalyptic number.

It is an amenable number.

165253555436 is a deficient number, since it is larger than the sum of its proper divisors (132946686148).

165253555436 is a wasteful number, since it uses less digits than its factorization.

165253555436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9391681 (or 9391679 counting only the distinct ones).

The product of its digits is 8100000, while the sum is 50.

The spelling of 165253555436 in words is "one hundred sixty-five billion, two hundred fifty-three million, five hundred fifty-five thousand, four hundred thirty-six".