81106888841383 has 8 divisors (see below), whose sum is σ = 81309639090816. Its totient is φ = 80904141024000.

The previous prime is 81106888841311. The next prime is 81106888841387. The reversal of 81106888841383 is 38314888860118.

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-81106888841383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81106888841387) 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, 79267803 + ... + 80284483.

It is an arithmetic number, because the mean of its divisors is an integer number (10163704886352).

Almost surely, 2^{81106888841383} is an apocalyptic number.

81106888841383 is a deficient number, since it is larger than the sum of its proper divisors (202750249433).

81106888841383 is a wasteful number, since it uses less digits than its factorization.

81106888841383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216025.

The product of its (nonzero) digits is 56623104, while the sum is 67.

The spelling of 81106888841383 in words is "eighty-one trillion, one hundred six billion, eight hundred eighty-eight million, eight hundred forty-one thousand, three hundred eighty-three".