81084554286 has 16 divisors (see below), whose sum is σ = 162236736000. Its totient is φ = 27016913528.

The previous prime is 81084554281. The next prime is 81084554293. The reversal of 81084554286 is 68245548018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81084554281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2802216 + ... + 2831003.

It is an arithmetic number, because the mean of its divisors is an integer number (10139796000).

Almost surely, 2^81084554286 is an apocalyptic number.

81084554286 is an abundant number, since it is smaller than the sum of its proper divisors (81152181714).

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

81084554286 is a wasteful number, since it uses less digits than its factorization.

81084554286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635623.

The product of its (nonzero) digits is 2457600, while the sum is 51.

The spelling of 81084554286 in words is "eighty-one billion, eighty-four million, five hundred fifty-four thousand, two hundred eighty-six".