71507864285 has 24 divisors (see below), whose sum is σ = 101574818520. Its totient is φ = 48005274240.

The previous prime is 71507864273. The next prime is 71507864293. The reversal of 71507864285 is 58246870517.

It can be written as a sum of positive squares in 4 ways, for example, as 698122084 + 70809742201 = 26422^2 + 266101^2 .

It is not a de Polignac number, because 71507864285 - 2⁶ = 71507864221 is a prime.

It is a super-2 number, since 2×71507864285² (a number of 23 digits) contains 22 as substring.

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, 4538090 + ... + 4553819.

It is an arithmetic number, because the mean of its divisors is an integer number (4232284105).

Almost surely, 2^71507864285 is an apocalyptic number.

It is an amenable number.

71507864285 is a deficient number, since it is larger than the sum of its proper divisors (30066954235).

71507864285 is a wasteful number, since it uses less digits than its factorization.

71507864285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9091949 (or 9091938 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 71507864285 in words is "seventy-one billion, five hundred seven million, eight hundred sixty-four thousand, two hundred eighty-five".