81079200948 has 12 divisors (see below), whose sum is σ = 189184802240. Its totient is φ = 27026400312.

The previous prime is 81079200919. The next prime is 81079201013. The reversal of 81079200948 is 84900297018.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 81079200897 and 81079200906.

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 3 ways as a sum of consecutive naturals, for example, 3378300028 + ... + 3378300051.

Almost surely, 2^81079200948 is an apocalyptic number.

It is an amenable number.

81079200948 is an abundant number, since it is smaller than the sum of its proper divisors (108105601292).

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

81079200948 is a wasteful number, since it uses less digits than its factorization.

81079200948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756600086 (or 6756600084 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 81079200948 in words is "eighty-one billion, seventy-nine million, two hundred thousand, nine hundred forty-eight".