168640057695 has 8 divisors (see below), whose sum is σ = 269824092336. Its totient is φ = 89941364096.

The previous prime is 168640057679. The next prime is 168640057723. The reversal of 168640057695 is 596750046861.

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

It is a cyclic number.

It is not a de Polignac number, because 168640057695 - 2⁴ = 168640057679 is a prime.

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, 5621335242 + ... + 5621335271.

It is an arithmetic number, because the mean of its divisors is an integer number (33728011542).

Almost surely, 2^168640057695 is an apocalyptic number.

168640057695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168640057695 is a deficient number, since it is larger than the sum of its proper divisors (101184034641).

168640057695 is a wasteful number, since it uses less digits than its factorization.

168640057695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11242670521.

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 168640057695 in words is "one hundred sixty-eight billion, six hundred forty million, fifty-seven thousand, six hundred ninety-five".