81734886067 has 8 divisors (see below), whose sum is σ = 82166488400. Its totient is φ = 81303367680.

The previous prime is 81734886053. The next prime is 81734886073. The reversal of 81734886067 is 76068843718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81734886067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81734886017) 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, 3326467 + ... + 3350947.

It is an arithmetic number, because the mean of its divisors is an integer number (10270811050).

Almost surely, 2^81734886067 is an apocalyptic number.

81734886067 is a deficient number, since it is larger than the sum of its proper divisors (431602333).

81734886067 is a wasteful number, since it uses less digits than its factorization.

81734886067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41973.

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 81734886067 in words is "eighty-one billion, seven hundred thirty-four million, eight hundred eighty-six thousand, sixty-seven".