80120165 has 8 divisors (see below), whose sum is σ = 96449400. Its totient is φ = 63892672.

The previous prime is 80120143. The next prime is 80120177. The reversal of 80120165 is 56102108.

It can be written as a sum of positive squares in 4 ways, for example, as 2979076 + 77141089 = 1726^2 + 8783^2 .

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 80120165 - 2¹⁸ = 79858021 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80120165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23690 + ... + 26859.

It is an arithmetic number, because the mean of its divisors is an integer number (12056175).

Almost surely, 2^80120165 is an apocalyptic number.

It is an amenable number.

80120165 is a deficient number, since it is larger than the sum of its proper divisors (16329235).

80120165 is a wasteful number, since it uses less digits than its factorization.

80120165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50871.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 80120165 is about 8950.9868171057. The cubic root of 80120165 is about 431.1025697820.

The spelling of 80120165 in words is "eighty million, one hundred twenty thousand, one hundred sixty-five".