71504004165 has 16 divisors (see below), whose sum is σ = 124806989376. Its totient is φ = 34668608000.

The previous prime is 71504004097. The next prime is 71504004167. The reversal of 71504004165 is 56140040517.

It is not a de Polignac number, because 71504004165 - 2¹⁰ = 71504003141 is a prime.

It is a super-3 number, since 3×71504004165³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71504004167) 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, 216678636 + ... + 216678965.

It is an arithmetic number, because the mean of its divisors is an integer number (7800436836).

Almost surely, 2^71504004165 is an apocalyptic number.

It is an amenable number.

71504004165 is a deficient number, since it is larger than the sum of its proper divisors (53302985211).

71504004165 is a wasteful number, since it uses less digits than its factorization.

71504004165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433357620.

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 71504004165 in words is "seventy-one billion, five hundred four million, four thousand, one hundred sixty-five".