81364881711314 has 4 divisors (see below), whose sum is σ = 122047322566974. Its totient is φ = 40682440855656.

The previous prime is 81364881711307. The next prime is 81364881711317. The reversal of 81364881711314 is 41311718846318.

81364881711314 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 56723416935025 + 24641464776289 = 7531495^2 + 4964017^2 .

It is a super-2 number, since 2×81364881711314² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81364881711314.

It is not an unprimeable number, because it can be changed into a prime (81364881711317) 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 as a sum of consecutive naturals, namely, 20341220427827 + ... + 20341220427830.

Almost surely, 2^{81364881711314} is an apocalyptic number.

81364881711314 is a deficient number, since it is larger than the sum of its proper divisors (40682440855660).

81364881711314 is a wasteful number, since it uses less digits than its factorization.

81364881711314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40682440855659.

The product of its digits is 3096576, while the sum is 56.

The spelling of 81364881711314 in words is "eighty-one trillion, three hundred sixty-four billion, eight hundred eighty-one million, seven hundred eleven thousand, three hundred fourteen".