168498894861 has 48 divisors (see below), whose sum is σ = 280395827712. Its totient is φ = 96503536800.

The previous prime is 168498894833. The next prime is 168498894881.

168498894861 is a `hidden beast` number, since 1 + 68 + 4 + 9 + 8 + 89 + 486 + 1 = 666.

168498894861 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 168498894861 - 2⁵ = 168498894829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168498894861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168498894881) 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 in 47 ways as a sum of consecutive naturals, for example, 256795 + ... + 634776.

It is an arithmetic number, because the mean of its divisors is an integer number (5841579744).

Almost surely, 2^168498894861 is an apocalyptic number.

168498894861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168498894861 is a deficient number, since it is larger than the sum of its proper divisors (111896932851).

168498894861 is a wasteful number, since it uses less digits than its factorization.

168498894861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891694 (or 891691 counting only the distinct ones).

The product of its digits is 191102976, while the sum is 72.

The spelling of 168498894861 in words is "one hundred sixty-eight billion, four hundred ninety-eight million, eight hundred ninety-four thousand, eight hundred sixty-one".