81346612908 has 48 divisors (see below), whose sum is σ = 207082391040. Its totient is φ = 24648312000.

The previous prime is 81346612873. The next prime is 81346612969. The reversal of 81346612908 is 80921664318.

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, 2101933 + ... + 2140283.

It is an arithmetic number, because the mean of its divisors is an integer number (4314216480).

Almost surely, 2^81346612908 is an apocalyptic number.

It is an amenable number.

81346612908 is an abundant number, since it is smaller than the sum of its proper divisors (125735778132).

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

81346612908 is a wasteful number, since it uses less digits than its factorization.

81346612908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54438 (or 54436 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 81346612908 in words is "eighty-one billion, three hundred forty-six million, six hundred twelve thousand, nine hundred eight".