71664500063 has 8 divisors (see below), whose sum is σ = 77972796048. Its totient is φ = 65469867264.

The previous prime is 71664500041. The next prime is 71664500069. The reversal of 71664500063 is 36000546617.

It is a happy number.

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 71664500063 - 2⁸ = 71664499807 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 (71664500069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28414481 + ... + 28417002.

It is an arithmetic number, because the mean of its divisors is an integer number (9746599506).

Almost surely, 2^71664500063 is an apocalyptic number.

71664500063 is a deficient number, since it is larger than the sum of its proper divisors (6308295985).

71664500063 is a wasteful number, since it uses less digits than its factorization.

71664500063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56831593.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 71664500063 in words is "seventy-one billion, six hundred sixty-four million, five hundred thousand, sixty-three".