165163315454 has 4 divisors (see below), whose sum is σ = 247744973184. Its totient is φ = 82581657726.

The previous prime is 165163315453. The next prime is 165163315459. The reversal of 165163315454 is 454513361561.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×165163315454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165163315453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41290828862 + ... + 41290828865.

It is an arithmetic number, because the mean of its divisors is an integer number (61936243296).

Almost surely, 2^165163315454 is an apocalyptic number.

165163315454 is a deficient number, since it is larger than the sum of its proper divisors (82581657730).

165163315454 is an equidigital number, since it uses as much as digits as its factorization.

165163315454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82581657729.

The product of its digits is 648000, while the sum is 44.

The spelling of 165163315454 in words is "one hundred sixty-five billion, one hundred sixty-three million, three hundred fifteen thousand, four hundred fifty-four".