71140801872 has 40 divisors (see below), whose sum is σ = 210034749376. Its totient is φ = 20325943296.

The previous prime is 71140801847. The next prime is 71140801903. The reversal of 71140801872 is 27810804117.

It is a super-2 number, since 2×71140801872² (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 71140801872.

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, 105863953 + ... + 105864624.

Almost surely, 2^71140801872 is an apocalyptic number.

It is an amenable number.

71140801872 is an abundant number, since it is smaller than the sum of its proper divisors (138893947504).

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

71140801872 is a wasteful number, since it uses less digits than its factorization.

71140801872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211728595 (or 211728589 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 39.

The spelling of 71140801872 in words is "seventy-one billion, one hundred forty million, eight hundred one thousand, eight hundred seventy-two".