80946616440 has 64 divisors (see below), whose sum is σ = 245197555200. Its totient is φ = 21376190592.

The previous prime is 80946616423. The next prime is 80946616453. The reversal of 80946616440 is 4461664908.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 80946616440.

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, 3262180 + ... + 3286899.

It is an arithmetic number, because the mean of its divisors is an integer number (3831211800).

Almost surely, 2^80946616440 is an apocalyptic number.

It is an amenable number.

80946616440 is an abundant number, since it is smaller than the sum of its proper divisors (164250938760).

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

80946616440 is a wasteful number, since it uses less digits than its factorization.

80946616440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6549196 (or 6549192 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 80946616440 in words is "eighty billion, nine hundred forty-six million, six hundred sixteen thousand, four hundred forty".