80456649940 has 24 divisors (see below), whose sum is σ = 169568936712. Its totient is φ = 32066474880.

The previous prime is 80456649919. The next prime is 80456649971. The reversal of 80456649940 is 4994665408.

It can be written as a sum of positive squares in 4 ways, for example, as 8419163536 + 72037486404 = 91756^2 + 268398^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7255891 + ... + 7266970.

It is an arithmetic number, because the mean of its divisors is an integer number (7065372363).

Almost surely, 2^80456649940 is an apocalyptic number.

It is an amenable number.

80456649940 is an abundant number, since it is smaller than the sum of its proper divisors (89112286772).

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

80456649940 is a wasteful number, since it uses less digits than its factorization.

80456649940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14523147 (or 14523145 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 80456649940 in words is "eighty billion, four hundred fifty-six million, six hundred forty-nine thousand, nine hundred forty".