81888516413126 has 8 divisors (see below), whose sum is σ = 122832856827360. Its totient is φ = 40944230804008.

The previous prime is 81888516413111. The next prime is 81888516413131. The reversal of 81888516413126 is 62131461588818.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9736361 + ... + 16080228.

It is an arithmetic number, because the mean of its divisors is an integer number (15354107103420).

Almost surely, 2^{81888516413126} is an apocalyptic number.

81888516413126 is a deficient number, since it is larger than the sum of its proper divisors (40944340414234).

81888516413126 is a wasteful number, since it uses less digits than its factorization.

81888516413126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27402558.

The product of its digits is 17694720, while the sum is 62.

The spelling of 81888516413126 in words is "eighty-one trillion, eight hundred eighty-eight billion, five hundred sixteen million, four hundred thirteen thousand, one hundred twenty-six".