168038165654 has 4 divisors (see below), whose sum is σ = 252057248484. Its totient is φ = 84019082826.

The previous prime is 168038165611. The next prime is 168038165693. The reversal of 168038165654 is 456561830861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 456561830861 = 29 ⋅15743511409.

It is a super-2 number, since 2×168038165654² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168038165596 and 168038165605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42009541412 + ... + 42009541415.

It is an arithmetic number, because the mean of its divisors is an integer number (63014312121).

Almost surely, 2^168038165654 is an apocalyptic number.

168038165654 is a deficient number, since it is larger than the sum of its proper divisors (84019082830).

168038165654 is an equidigital number, since it uses as much as digits as its factorization.

168038165654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84019082829.

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 168038165654 in words is "one hundred sixty-eight billion, thirty-eight million, one hundred sixty-five thousand, six hundred fifty-four".