81014677071 has 4 divisors (see below), whose sum is σ = 108019569432. Its totient is φ = 54009784712.

The previous prime is 81014677069. The next prime is 81014677091. The reversal of 81014677071 is 17077641018.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 81014677071 - 2¹ = 81014677069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81014677091) 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 3 ways as a sum of consecutive naturals, for example, 13502446176 + ... + 13502446181.

It is an arithmetic number, because the mean of its divisors is an integer number (27004892358).

Almost surely, 2^81014677071 is an apocalyptic number.

81014677071 is a deficient number, since it is larger than the sum of its proper divisors (27004892361).

81014677071 is a wasteful number, since it uses less digits than its factorization.

81014677071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27004892360.

The product of its (nonzero) digits is 65856, while the sum is 42.

The spelling of 81014677071 in words is "eighty-one billion, fourteen million, six hundred seventy-seven thousand, seventy-one".