81167190962 has 16 divisors (see below), whose sum is σ = 143035889472. Its totient is φ = 34056163920.

The previous prime is 81167190947. The next prime is 81167190967. The reversal of 81167190962 is 26909176118.

It is a super-2 number, since 2×81167190962² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81167190962.

It is not an unprimeable number, because it can be changed into a prime (81167190967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141900398 + ... + 141900969.

It is an arithmetic number, because the mean of its divisors is an integer number (8939743092).

Almost surely, 2^81167190962 is an apocalyptic number.

81167190962 is a deficient number, since it is larger than the sum of its proper divisors (61868698510).

81167190962 is a wasteful number, since it uses less digits than its factorization.

81167190962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283801393.

The product of its (nonzero) digits is 326592, while the sum is 50.

The spelling of 81167190962 in words is "eighty-one billion, one hundred sixty-seven million, one hundred ninety thousand, nine hundred sixty-two".