168350091861 has 8 divisors (see below), whose sum is σ = 256533473344. Its totient is φ = 96200052480.

The previous prime is 168350091857. The next prime is 168350091883. The reversal of 168350091861 is 168190053861.

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

It is not a de Polignac number, because 168350091861 - 2² = 168350091857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168350091861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168350091851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4008335500 + ... + 4008335541.

It is an arithmetic number, because the mean of its divisors is an integer number (32066684168).

Almost surely, 2^168350091861 is an apocalyptic number.

It is an amenable number.

168350091861 is a deficient number, since it is larger than the sum of its proper divisors (88183381483).

168350091861 is an equidigital number, since it uses as much as digits as its factorization.

168350091861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8016671051.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 168350091861 in words is "one hundred sixty-eight billion, three hundred fifty million, ninety-one thousand, eight hundred sixty-one".