81488088418 has 32 divisors (see below), whose sum is σ = 139683346560. Its totient is φ = 35291688960.

The previous prime is 81488088413. The next prime is 81488088427.

81488088418 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (81488088413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183273 + ... + 443356.

It is an arithmetic number, because the mean of its divisors is an integer number (4365104580).

Almost surely, 2^81488088418 is an apocalyptic number.

81488088418 is a deficient number, since it is larger than the sum of its proper divisors (58195258142).

81488088418 is a wasteful number, since it uses less digits than its factorization.

81488088418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626922.

The product of its (nonzero) digits is 4194304, while the sum is 58.

The spelling of 81488088418 in words is "eighty-one billion, four hundred eighty-eight million, eighty-eight thousand, four hundred eighteen".