80785836005 has 16 divisors (see below), whose sum is σ = 111497692800. Its totient is φ = 55043157312.

The previous prime is 80785835971. The next prime is 80785836013. The reversal of 80785836005 is 50063858708.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80785836005 is a prime.

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, 7345355 + ... + 7356344.

It is an arithmetic number, because the mean of its divisors is an integer number (6968605800).

Almost surely, 2^80785836005 is an apocalyptic number.

It is an amenable number.

80785836005 is a deficient number, since it is larger than the sum of its proper divisors (30711856795).

80785836005 is a wasteful number, since it uses less digits than its factorization.

80785836005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14701868.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 80785836005 in words is "eighty billion, seven hundred eighty-five million, eight hundred thirty-six thousand, five".