81360478164876 has 48 divisors (see below), whose sum is σ = 193882172413440. Its totient is φ = 26542876789440.

The previous prime is 81360478164857. The next prime is 81360478164919. The reversal of 81360478164876 is 67846187406318.

It is a self number, because there is not a number n which added to its sum of digits gives 81360478164876.

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, 62426571 + ... + 63716541.

It is an arithmetic number, because the mean of its divisors is an integer number (4039211925280).

Almost surely, 2^{81360478164876} is an apocalyptic number.

It is an amenable number.

81360478164876 is an abundant number, since it is smaller than the sum of its proper divisors (112521694248564).

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

81360478164876 is a wasteful number, since it uses less digits than its factorization.

81360478164876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401854 (or 1401852 counting only the distinct ones).

The product of its (nonzero) digits is 260112384, while the sum is 69.

The spelling of 81360478164876 in words is "eighty-one trillion, three hundred sixty billion, four hundred seventy-eight million, one hundred sixty-four thousand, eight hundred seventy-six".