71507142873 has 20 divisors (see below), whose sum is σ = 109303487568. Its totient is φ = 46562788440.

The previous prime is 71507142841. The next prime is 71507142881. The reversal of 71507142873 is 37824170517.

71507142873 is a `hidden beast` number, since 7 + 150 + 7 + 1 + 428 + 73 = 666.

It is not a de Polignac number, because 71507142873 - 2⁵ = 71507142841 is a prime.

It is a super-2 number, since 2×71507142873² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71507942873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10261683 + ... + 10268648.

Almost surely, 2^71507142873 is an apocalyptic number.

It is an amenable number.

71507142873 is a deficient number, since it is larger than the sum of its proper divisors (37796344695).

71507142873 is a wasteful number, since it uses less digits than its factorization.

71507142873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20530386 (or 20530377 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 71507142873 in words is "seventy-one billion, five hundred seven million, one hundred forty-two thousand, eight hundred seventy-three".