71851369968 has 120 divisors (see below), whose sum is σ = 237223673856. Its totient is φ = 19866729600.

The previous prime is 71851369957. The next prime is 71851369973. The reversal of 71851369968 is 86996315817.

71851369968 is a `hidden beast` number, since 7 + 185 + 1 + 369 + 96 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1118448 + ... + 1180943.

Almost surely, 2^71851369968 is an apocalyptic number.

It is an amenable number.

71851369968 is an abundant number, since it is smaller than the sum of its proper divisors (165372303888).

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

71851369968 is a wasteful number, since it uses less digits than its factorization.

71851369968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299443 (or 2299434 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 71851369968 in words is "seventy-one billion, eight hundred fifty-one million, three hundred sixty-nine thousand, nine hundred sixty-eight".