80644161 has 8 divisors (see below), whose sum is σ = 115796800. Its totient is φ = 49627152.

The previous prime is 80644147. The next prime is 80644169. The reversal of 80644161 is 16144608.

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

It is not a de Polignac number, because 80644161 - 2⁵ = 80644129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80644169) 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, 1033861 + ... + 1033938.

It is an arithmetic number, because the mean of its divisors is an integer number (14474600).

Almost surely, 2^80644161 is an apocalyptic number.

It is an amenable number.

80644161 is a deficient number, since it is larger than the sum of its proper divisors (35152639).

80644161 is a wasteful number, since it uses less digits than its factorization.

80644161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067815.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 80644161 is about 8980.2094073579. The cubic root of 80644161 is about 432.0403500977.

Adding to 80644161 its reverse (16144608), we get a palindrome (96788769).

The spelling of 80644161 in words is "eighty million, six hundred forty-four thousand, one hundred sixty-one".