71840689276 has 12 divisors (see below), whose sum is σ = 125724496240. Its totient is φ = 35919404640.

The previous prime is 71840689247. The next prime is 71840689279. The reversal of 71840689276 is 67298604817.

It is a super-2 number, since 2×71840689276² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71840689276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71840689279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46185 + ... + 381856.

Almost surely, 2^71840689276 is an apocalyptic number.

It is an amenable number.

71840689276 is a deficient number, since it is larger than the sum of its proper divisors (53883806964).

71840689276 is a wasteful number, since it uses less digits than its factorization.

71840689276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470004 (or 470002 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 71840689276 in words is "seventy-one billion, eight hundred forty million, six hundred eighty-nine thousand, two hundred seventy-six".