165425018071 has 16 divisors (see below), whose sum is σ = 167410937088. Its totient is φ = 163452240000.

The previous prime is 165425018063. The next prime is 165425018113. The reversal of 165425018071 is 170810524561.

It is a cyclic number.

It is not a de Polignac number, because 165425018071 - 2³ = 165425018063 is a prime.

It is a super-2 number, since 2×165425018071² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165425018051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59057871 + ... + 59060671.

It is an arithmetic number, because the mean of its divisors is an integer number (10463183568).

Almost surely, 2^165425018071 is an apocalyptic number.

165425018071 is a deficient number, since it is larger than the sum of its proper divisors (1985919017).

165425018071 is a wasteful number, since it uses less digits than its factorization.

165425018071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4902.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 165425018071 in words is "one hundred sixty-five billion, four hundred twenty-five million, eighteen thousand, seventy-one".