71691103907 has 16 divisors (see below), whose sum is σ = 72530858400. Its totient is φ = 70857400320.

The previous prime is 71691103889. The next prime is 71691103927. The reversal of 71691103907 is 70930119617.

It is a cyclic number.

It is not a de Polignac number, because 71691103907 - 2²² = 71686909603 is a prime.

It is a super-2 number, since 2×71691103907² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71691103927) 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 15 ways as a sum of consecutive naturals, for example, 31594769 + ... + 31597037.

It is an arithmetic number, because the mean of its divisors is an integer number (4533178650).

Almost surely, 2^71691103907 is an apocalyptic number.

71691103907 is a deficient number, since it is larger than the sum of its proper divisors (839754493).

71691103907 is a wasteful number, since it uses less digits than its factorization.

71691103907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446.

The product of its (nonzero) digits is 71442, while the sum is 44.

The spelling of 71691103907 in words is "seventy-one billion, six hundred ninety-one million, one hundred three thousand, nine hundred seven".