81004586255 has 8 divisors (see below), whose sum is σ = 100557417600. Its totient is φ = 62569059616.

The previous prime is 81004586231. The next prime is 81004586323. The reversal of 81004586255 is 55268540018.

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

It is a cyclic number.

It is not a de Polignac number, because 81004586255 - 2⁶ = 81004586191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279326015 + ... + 279326304.

It is an arithmetic number, because the mean of its divisors is an integer number (12569677200).

Almost surely, 2^81004586255 is an apocalyptic number.

81004586255 is a deficient number, since it is larger than the sum of its proper divisors (19552831345).

81004586255 is a wasteful number, since it uses less digits than its factorization.

81004586255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558652353.

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 81004586255 in words is "eighty-one billion, four million, five hundred eighty-six thousand, two hundred fifty-five".