16072065165 has 64 divisors (see below), whose sum is σ = 28990144512. Its totient is φ = 7549113600.

The previous prime is 16072065161. The next prime is 16072065181. The reversal of 16072065165 is 56156027061.

It is not a de Polignac number, because 16072065165 - 2² = 16072065161 is a prime.

It is a super-2 number, since 2×16072065165² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16072065161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 410472 + ... + 447918.

It is an arithmetic number, because the mean of its divisors is an integer number (452971008).

Almost surely, 2^16072065165 is an apocalyptic number.

16072065165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16072065165 is a deficient number, since it is larger than the sum of its proper divisors (12918079347).

16072065165 is a wasteful number, since it uses less digits than its factorization.

16072065165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37570.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 16072065165 in words is "sixteen billion, seventy-two million, sixty-five thousand, one hundred sixty-five".