80578567891 has 8 divisors (see below), whose sum is σ = 80783216640. Its totient is φ = 80374101888.

The previous prime is 80578567819. The next prime is 80578567913. The reversal of 80578567891 is 19876587508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80578567891 - 2⁷ = 80578567763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80578567691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859950 + ... + 949036.

It is an arithmetic number, because the mean of its divisors is an integer number (10097902080).

Almost surely, 2^80578567891 is an apocalyptic number.

80578567891 is a deficient number, since it is larger than the sum of its proper divisors (204648749).

80578567891 is a wasteful number, since it uses less digits than its factorization.

80578567891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91373.

The product of its (nonzero) digits is 33868800, while the sum is 64.

The spelling of 80578567891 in words is "eighty billion, five hundred seventy-eight million, five hundred sixty-seven thousand, eight hundred ninety-one".