165154256405453 has 8 divisors (see below), whose sum is σ = 188747852110272. Its totient is φ = 141560693326656.

The previous prime is 165154256405449. The next prime is 165154256405507. The reversal of 165154256405453 is 354504652451561.

165154256405453 is digitally balanced in base 2, because in such base 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 cyclic number.

It is not a de Polignac number, because 165154256405453 - 2² = 165154256405449 is a prime.

It is a super-2 number, since 2×165154256405453² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165154256405053) 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, 3873626 + ... + 18582612.

It is an arithmetic number, because the mean of its divisors is an integer number (23593481513784).

Almost surely, 2^{165154256405453} is an apocalyptic number.

It is an amenable number.

165154256405453 is a deficient number, since it is larger than the sum of its proper divisors (23593595704819).

165154256405453 is a wasteful number, since it uses less digits than its factorization.

165154256405453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16313011.

The product of its (nonzero) digits is 43200000, while the sum is 56.

The spelling of 165154256405453 in words is "one hundred sixty-five trillion, one hundred fifty-four billion, two hundred fifty-six million, four hundred five thousand, four hundred fifty-three".