81414708068 has 24 divisors (see below), whose sum is σ = 148734237120. Its totient is φ = 38920733280.

The previous prime is 81414708061. The next prime is 81414708079. The reversal of 81414708068 is 86080741418.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (81414708061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26363 + ... + 404381.

It is an arithmetic number, because the mean of its divisors is an integer number (6197259880).

Almost surely, 2^81414708068 is an apocalyptic number.

It is an amenable number.

81414708068 is a deficient number, since it is larger than the sum of its proper divisors (67319529052).

81414708068 is a wasteful number, since it uses less digits than its factorization.

81414708068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380387 (or 380385 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 81414708068 in words is "eighty-one billion, four hundred fourteen million, seven hundred eight thousand, sixty-eight".