80910235885 has 8 divisors (see below), whose sum is σ = 97341879960. Its totient is φ = 64561790784.

The previous prime is 80910235883. The next prime is 80910235891. The reversal of 80910235885 is 58853201908.

It can be written as a sum of positive squares in 4 ways, for example, as 2811226441 + 78099009444 = 53021^2 + 279462^2 .

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 80910235885 - 2¹ = 80910235883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80910235883) 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, 20797602 + ... + 20801491.

It is an arithmetic number, because the mean of its divisors is an integer number (12167734995).

Almost surely, 2^80910235885 is an apocalyptic number.

It is an amenable number.

80910235885 is a deficient number, since it is larger than the sum of its proper divisors (16431644075).

80910235885 is a wasteful number, since it uses less digits than its factorization.

80910235885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41599487.

The product of its (nonzero) digits is 691200, while the sum is 49.

It can be divided in two parts, 8091023 and 5885, that added together give a palindrome (8096908).

The spelling of 80910235885 in words is "eighty billion, nine hundred ten million, two hundred thirty-five thousand, eight hundred eighty-five".