71305554966 has 16 divisors (see below), whose sum is σ = 142740417024. Its totient is φ = 23746967144.

The previous prime is 71305554899. The next prime is 71305554973. The reversal of 71305554966 is 66945550317.

71305554966 = 133514² + 133515² + ... + 133517².

It is a super-2 number, since 2×71305554966² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5380626 + ... + 5393861.

It is an arithmetic number, because the mean of its divisors is an integer number (8921276064).

Almost surely, 2^71305554966 is an apocalyptic number.

71305554966 is an abundant number, since it is smaller than the sum of its proper divisors (71434862058).

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

71305554966 is a wasteful number, since it uses less digits than its factorization.

71305554966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10775595.

The product of its (nonzero) digits is 3402000, while the sum is 51.

The spelling of 71305554966 in words is "seventy-one billion, three hundred five million, five hundred fifty-four thousand, nine hundred sixty-six".