81080526968 has 64 divisors (see below), whose sum is σ = 178584696000. Its totient is φ = 34494996480.

The previous prime is 81080526953. The next prime is 81080527027. The reversal of 81080526968 is 86962508018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268088 + ... + 483768.

It is an arithmetic number, because the mean of its divisors is an integer number (2790385875).

Almost surely, 2^81080526968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81080526968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89292348000).

81080526968 is an abundant number, since it is smaller than the sum of its proper divisors (97504169032).

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

81080526968 is a wasteful number, since it uses less digits than its factorization.

81080526968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215845 (or 215827 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 81080526968 in words is "eighty-one billion, eighty million, five hundred twenty-six thousand, nine hundred sixty-eight".