81014806162 has 16 divisors (see below), whose sum is σ = 124688003832. Its totient is φ = 39455342080.

The previous prime is 81014806151. The next prime is 81014806183. The reversal of 81014806162 is 26160841018.

It is a Cunningham number, because it is equal to 284631²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3903625441 + 77111180721 = 62479^2 + 277689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750043 + ... + 851230.

Almost surely, 2^81014806162 is an apocalyptic number.

81014806162 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

81014806162 is a deficient number, since it is larger than the sum of its proper divisors (43673197670).

81014806162 is a wasteful number, since it uses less digits than its factorization.

81014806162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601933.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 81014806162 in words is "eighty-one billion, fourteen million, eight hundred six thousand, one hundred sixty-two".