168444813358 has 16 divisors (see below), whose sum is σ = 254078781264. Its totient is φ = 83752320960.

The previous prime is 168444813349. The next prime is 168444813379. The reversal of 168444813358 is 853318444861.

It is a super-2 number, since 2×168444813358² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168444813299 and 168444813308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675298 + ... + 890458.

It is an arithmetic number, because the mean of its divisors is an integer number (15879923829).

Almost surely, 2^168444813358 is an apocalyptic number.

168444813358 is a deficient number, since it is larger than the sum of its proper divisors (85633967906).

168444813358 is a wasteful number, since it uses less digits than its factorization.

168444813358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217347.

The product of its digits is 8847360, while the sum is 55.

The spelling of 168444813358 in words is "one hundred sixty-eight billion, four hundred forty-four million, eight hundred thirteen thousand, three hundred fifty-eight".