168381893554 has 8 divisors (see below), whose sum is σ = 288654674688. Its totient is φ = 72163668660.

The previous prime is 168381893501. The next prime is 168381893591. The reversal of 168381893554 is 455398183861.

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

It is a junction number, because it is equal to n+sod(n) for n = 168381893492 and 168381893501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6013639042 + ... + 6013639069.

It is an arithmetic number, because the mean of its divisors is an integer number (36081834336).

Almost surely, 2^168381893554 is an apocalyptic number.

168381893554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

168381893554 is a deficient number, since it is larger than the sum of its proper divisors (120272781134).

168381893554 is a wasteful number, since it uses less digits than its factorization.

168381893554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12027278120.

The product of its digits is 24883200, while the sum is 61.

The spelling of 168381893554 in words is "one hundred sixty-eight billion, three hundred eighty-one million, eight hundred ninety-three thousand, five hundred fifty-four".