80717964473 has 4 divisors (see below), whose sum is σ = 80804852340. Its totient is φ = 80631076608.

The previous prime is 80717964463. The next prime is 80717964527. The reversal of 80717964473 is 37446971708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15339565609 + 65378398864 = 123853^2 + 255692^2 .

It is a cyclic number.

It is not a de Polignac number, because 80717964473 - 2¹² = 80717960377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80717964413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43442540 + ... + 43444397.

It is an arithmetic number, because the mean of its divisors is an integer number (20201213085).

Almost surely, 2^80717964473 is an apocalyptic number.

It is an amenable number.

80717964473 is a deficient number, since it is larger than the sum of its proper divisors (86887867).

80717964473 is an equidigital number, since it uses as much as digits as its factorization.

80717964473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86887866.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 80717964473 in words is "eighty billion, seven hundred seventeen million, nine hundred sixty-four thousand, four hundred seventy-three".