71571161142 has 80 divisors (see below), whose sum is σ = 181798792560. Its totient is φ = 20862836928.

The previous prime is 71571161141. The next prime is 71571161143. The reversal of 71571161142 is 24116117517.

71571161142 is a `hidden beast` number, since 71 + 571 + 1 + 6 + 1 + 14 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (71571161141) and next prime (71571161143).

It is a super-2 number, since 2×71571161142² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71571161097 and 71571161106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71571161141) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 854313 + ... + 934340.

It is an arithmetic number, because the mean of its divisors is an integer number (2272484907).

Almost surely, 2^71571161142 is an apocalyptic number.

71571161142 is an abundant number, since it is smaller than the sum of its proper divisors (110227631418).

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

71571161142 is a wasteful number, since it uses less digits than its factorization.

71571161142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788699 (or 1788690 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

Adding to 71571161142 its reverse (24116117517), we get a palindrome (95687278659).

The spelling of 71571161142 in words is "seventy-one billion, five hundred seventy-one million, one hundred sixty-one thousand, one hundred forty-two".