163457665919 has 8 divisors (see below), whose sum is σ = 163840505760. Its totient is φ = 163075225600.

The previous prime is 163457665907. The next prime is 163457666017. The reversal of 163457665919 is 919566754361.

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 163457665919 - 2¹² = 163457661823 is a prime.

It is a super-2 number, since 2×163457665919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163457665619) 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, 727334 + ... + 925164.

It is an arithmetic number, because the mean of its divisors is an integer number (20480063220).

Almost surely, 2^163457665919 is an apocalyptic number.

163457665919 is a deficient number, since it is larger than the sum of its proper divisors (382839841).

163457665919 is a wasteful number, since it uses less digits than its factorization.

163457665919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199761.

The product of its digits is 36741600, while the sum is 62.

The spelling of 163457665919 in words is "one hundred sixty-three billion, four hundred fifty-seven million, six hundred sixty-five thousand, nine hundred nineteen".