81600160088 has 8 divisors (see below), whose sum is σ = 153000300180. Its totient is φ = 40800080040.

The previous prime is 81600160049. The next prime is 81600160091. The reversal of 81600160088 is 88006100618.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×81600160088² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5100009998 + ... + 5100010013.

Almost surely, 2^81600160088 is an apocalyptic number.

It is an amenable number.

81600160088 is a deficient number, since it is larger than the sum of its proper divisors (71400140092).

81600160088 is a wasteful number, since it uses less digits than its factorization.

81600160088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10200020017 (or 10200020013 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 81600160088 in words is "eighty-one billion, six hundred million, one hundred sixty thousand, eighty-eight".