71581670703 has 8 divisors (see below), whose sum is σ = 106046919600. Its totient is φ = 47721113784.

The previous prime is 71581670701. The next prime is 71581670711. The reversal of 71581670703 is 30707618517.

71581670703 is a `hidden beast` number, since 7 + 1 + 581 + 67 + 0 + 7 + 0 + 3 = 666.

It is not a de Polignac number, because 71581670703 - 2¹ = 71581670701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71581670701) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1325586468 + ... + 1325586521.

It is an arithmetic number, because the mean of its divisors is an integer number (13255864950).

Almost surely, 2^71581670703 is an apocalyptic number.

71581670703 is a deficient number, since it is larger than the sum of its proper divisors (34465248897).

71581670703 is a wasteful number, since it uses less digits than its factorization.

71581670703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651172998 (or 2651172992 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The spelling of 71581670703 in words is "seventy-one billion, five hundred eighty-one million, six hundred seventy thousand, seven hundred three".