81014677068 has 144 divisors (see below), whose sum is σ = 215850679296. Its totient is φ = 23506070400.

The previous prime is 81014677067. The next prime is 81014677069. The reversal of 81014677068 is 86077641018.

It is an interprime number because it is at equal distance from previous prime (81014677067) and next prime (81014677069).

It is not an unprimeable number, because it can be changed into a prime (81014677067) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12555243 + ... + 12561693.

Almost surely, 2^81014677068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81014677068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107925339648).

81014677068 is an abundant number, since it is smaller than the sum of its proper divisors (134836002228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81014677068 is a wasteful number, since it uses less digits than its factorization.

81014677068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732 (or 6711 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 81014677068 in words is "eighty-one billion, fourteen million, six hundred seventy-seven thousand, sixty-eight".