81474550088 has 16 divisors (see below), whose sum is σ = 152867537280. Its totient is φ = 40709873488.

The previous prime is 81474550039. The next prime is 81474550147. The reversal of 81474550088 is 88005547418.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3412556 + ... + 3436347.

It is an arithmetic number, because the mean of its divisors is an integer number (9554221080).

Almost surely, 2^81474550088 is an apocalyptic number.

It is an amenable number.

81474550088 is a deficient number, since it is larger than the sum of its proper divisors (71392987192).

81474550088 is a wasteful number, since it uses less digits than its factorization.

81474550088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850396 (or 6850392 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 50.

The spelling of 81474550088 in words is "eighty-one billion, four hundred seventy-four million, five hundred fifty thousand, eighty-eight".