163081697519 has 16 divisors (see below), whose sum is σ = 183290385600. Its totient is φ = 144059736576.

The previous prime is 163081697509. The next prime is 163081697557. The reversal of 163081697519 is 915796180361.

It is a cyclic number.

It is not a de Polignac number, because 163081697519 - 2¹⁶ = 163081631983 is a prime.

It is a super-2 number, since 2×163081697519² (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 (163081697509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1871459 + ... + 1956660.

It is an arithmetic number, because the mean of its divisors is an integer number (11455649100).

Almost surely, 2^163081697519 is an apocalyptic number.

163081697519 is a deficient number, since it is larger than the sum of its proper divisors (20208688081).

163081697519 is a wasteful number, since it uses less digits than its factorization.

163081697519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828274.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 163081697519 in words is "one hundred sixty-three billion, eighty-one million, six hundred ninety-seven thousand, five hundred nineteen".