81600169689626 has 32 divisors (see below), whose sum is σ = 140621757386880. Its totient is φ = 34787591479296.

The previous prime is 81600169689593. The next prime is 81600169689629. The reversal of 81600169689626 is 62698696100618.

It is not an unprimeable number, because it can be changed into a prime (81600169689629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33704810 + ... + 36044618.

It is an arithmetic number, because the mean of its divisors is an integer number (4394429918340).

Almost surely, 2^{81600169689626} is an apocalyptic number.

81600169689626 is a deficient number, since it is larger than the sum of its proper divisors (59021587697254).

81600169689626 is a wasteful number, since it uses less digits than its factorization.

81600169689626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352918.

The product of its (nonzero) digits is 80621568, while the sum is 68.

The spelling of 81600169689626 in words is "eighty-one trillion, six hundred billion, one hundred sixty-nine million, six hundred eighty-nine thousand, six hundred twenty-six".