71570056145 has 16 divisors (see below), whose sum is σ = 98190261120. Its totient is φ = 49058089344.

The previous prime is 71570056109. The next prime is 71570056163. The reversal of 71570056145 is 54165007517.

It is a cyclic number.

It is not a de Polignac number, because 71570056145 - 2¹² = 71570052049 is a prime.

It is a super-2 number, since 2×71570056145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291452 + ... + 477581.

It is an arithmetic number, because the mean of its divisors is an integer number (6136891320).

Almost surely, 2^71570056145 is an apocalyptic number.

It is an amenable number.

71570056145 is a deficient number, since it is larger than the sum of its proper divisors (26620204975).

71570056145 is a wasteful number, since it uses less digits than its factorization.

71570056145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771704.

The product of its (nonzero) digits is 147000, while the sum is 41.

The spelling of 71570056145 in words is "seventy-one billion, five hundred seventy million, fifty-six thousand, one hundred forty-five".