71993416164 has 24 divisors (see below), whose sum is σ = 171558780288. Its totient is φ = 23487213600.

The previous prime is 71993416163. The next prime is 71993416169. The reversal of 71993416164 is 46161439917.

It is not an unprimeable number, because it can be changed into a prime (71993416163) 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, 63823387 + ... + 63824514.

It is an arithmetic number, because the mean of its divisors is an integer number (7148282512).

Almost surely, 2^71993416164 is an apocalyptic number.

It is an amenable number.

71993416164 is an abundant number, since it is smaller than the sum of its proper divisors (99565364124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71993416164 is a wasteful number, since it uses less digits than its factorization.

71993416164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127647955 (or 127647953 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The spelling of 71993416164 in words is "seventy-one billion, nine hundred ninety-three million, four hundred sixteen thousand, one hundred sixty-four".