81050598288 has 120 divisors (see below), whose sum is σ = 258208741440. Its totient is φ = 23492916480.

The previous prime is 81050598287. The next prime is 81050598389. The reversal of 81050598288 is 88289505018.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (81050598281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1075923 + ... + 1148786.

It is an arithmetic number, because the mean of its divisors is an integer number (2151739512).

Almost surely, 2^81050598288 is an apocalyptic number.

81050598288 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

81050598288 is an abundant number, since it is smaller than the sum of its proper divisors (177158143152).

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

81050598288 is a wasteful number, since it uses less digits than its factorization.

81050598288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224757 (or 2224748 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 54.

The spelling of 81050598288 in words is "eighty-one billion, fifty million, five hundred ninety-eight thousand, two hundred eighty-eight".