165025680071 has 8 divisors (see below), whose sum is σ = 198527134080. Its totient is φ = 134005815288.

The previous prime is 165025680049. The next prime is 165025680073. The reversal of 165025680071 is 170086520561.

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 165025680071 - 2¹⁰ = 165025679047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165025680073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620397161 + ... + 620397426.

It is an arithmetic number, because the mean of its divisors is an integer number (24815891760).

Almost surely, 2^165025680071 is an apocalyptic number.

165025680071 is a deficient number, since it is larger than the sum of its proper divisors (33501454009).

165025680071 is a wasteful number, since it uses less digits than its factorization.

165025680071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240794613.

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 165025680071 in words is "one hundred sixty-five billion, twenty-five million, six hundred eighty thousand, seventy-one".