81089151726 has 16 divisors (see below), whose sum is σ = 176921785728. Its totient is φ = 24572470200.

The previous prime is 81089151721. The next prime is 81089151727. The reversal of 81089151726 is 62715198018.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81089151721) 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 7 ways as a sum of consecutive naturals, for example, 614311690 + ... + 614311821.

It is an arithmetic number, because the mean of its divisors is an integer number (11057611608).

Almost surely, 2^81089151726 is an apocalyptic number.

81089151726 is an abundant number, since it is smaller than the sum of its proper divisors (95832634002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81089151726 is a wasteful number, since it uses less digits than its factorization.

81089151726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228623527.

The product of its (nonzero) digits is 241920, while the sum is 48.

The spelling of 81089151726 in words is "eighty-one billion, eighty-nine million, one hundred fifty-one thousand, seven hundred twenty-six".