81877226149317 has 8 divisors (see below), whose sum is σ = 111832308887040. Its totient is φ = 53253480422240.

The previous prime is 81877226149297. The next prime is 81877226149363. The reversal of 81877226149317 is 71394162277818.

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

It is a cyclic number.

It is not a de Polignac number, because 81877226149317 - 2¹⁰ = 81877226148293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81877226149717) 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, 332834252517 + ... + 332834252762.

It is an arithmetic number, because the mean of its divisors is an integer number (13979038610880).

Almost surely, 2^{81877226149317} is an apocalyptic number.

It is an amenable number.

81877226149317 is a deficient number, since it is larger than the sum of its proper divisors (29955082737723).

81877226149317 is a wasteful number, since it uses less digits than its factorization.

81877226149317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665668505323.

The product of its digits is 56899584, while the sum is 66.

The spelling of 81877226149317 in words is "eighty-one trillion, eight hundred seventy-seven billion, two hundred twenty-six million, one hundred forty-nine thousand, three hundred seventeen".