81104526238 has 8 divisors (see below), whose sum is σ = 122047969680. Its totient is φ = 40421869680.

The previous prime is 81104526203. The next prime is 81104526247. The reversal of 81104526238 is 83262540118.

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

It is a self number, because there is not a number n which added to its sum of digits gives 81104526238.

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, 65195943 + ... + 65197186.

It is an arithmetic number, because the mean of its divisors is an integer number (15255996210).

Almost surely, 2^81104526238 is an apocalyptic number.

81104526238 is a deficient number, since it is larger than the sum of its proper divisors (40943443442).

81104526238 is a wasteful number, since it uses less digits than its factorization.

81104526238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130393442.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 81104526238 in words is "eighty-one billion, one hundred four million, five hundred twenty-six thousand, two hundred thirty-eight".