81011006488 has 32 divisors (see below), whose sum is σ = 152832677760. Its totient is φ = 40256236800.

The previous prime is 81011006471. The next prime is 81011006543. The reversal of 81011006488 is 88460011018.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1034406 + ... + 1109962.

It is an arithmetic number, because the mean of its divisors is an integer number (4776021180).

Almost surely, 2^81011006488 is an apocalyptic number.

It is an amenable number.

81011006488 is a deficient number, since it is larger than the sum of its proper divisors (71821671272).

81011006488 is a wasteful number, since it uses less digits than its factorization.

81011006488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76387 (or 76383 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 37.

The spelling of 81011006488 in words is "eighty-one billion, eleven million, six thousand, four hundred eighty-eight".