165216145454 has 8 divisors (see below), whose sum is σ = 249208711560. Its totient is φ = 82146574936.

The previous prime is 165216145411. The next prime is 165216145553. The reversal of 165216145454 is 454541612561.

165216145454 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 a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×165216145454² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 230748449 + ... + 230749164.

It is an arithmetic number, because the mean of its divisors is an integer number (31151088945).

Almost surely, 2^165216145454 is an apocalyptic number.

165216145454 is a deficient number, since it is larger than the sum of its proper divisors (83992566106).

165216145454 is a wasteful number, since it uses less digits than its factorization.

165216145454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461497794.

The product of its digits is 576000, while the sum is 44.

The spelling of 165216145454 in words is "one hundred sixty-five billion, two hundred sixteen million, one hundred forty-five thousand, four hundred fifty-four".