80981523266 has 16 divisors (see below), whose sum is σ = 142577509056. Its totient is φ = 33768356976.

The previous prime is 80981523263. The next prime is 80981523283. The reversal of 80981523266 is 66232518908.

It is a super-2 number, since 2×80981523266² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80981523263) 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 7 ways as a sum of consecutive naturals, for example, 78166976 + ... + 78168011.

It is an arithmetic number, because the mean of its divisors is an integer number (8911094316).

Almost surely, 2^80981523266 is an apocalyptic number.

80981523266 is a deficient number, since it is larger than the sum of its proper divisors (61595985790).

80981523266 is a wasteful number, since it uses less digits than its factorization.

80981523266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156335033.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 80981523266 in words is "eighty billion, nine hundred eighty-one million, five hundred twenty-three thousand, two hundred sixty-six".