81500883622 has 16 divisors (see below), whose sum is σ = 126206595072. Its totient is φ = 39432261960.

The previous prime is 81500883587. The next prime is 81500883643. The reversal of 81500883622 is 22638800518.

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, 688363 + ... + 798025.

It is an arithmetic number, because the mean of its divisors is an integer number (7887912192).

Almost surely, 2^81500883622 is an apocalyptic number.

81500883622 is a deficient number, since it is larger than the sum of its proper divisors (44705711450).

81500883622 is a wasteful number, since it uses less digits than its factorization.

81500883622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121683.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 81500883622 in words is "eighty-one billion, five hundred million, eight hundred eighty-three thousand, six hundred twenty-two".