71161765515113 has 32 divisors (see below), whose sum is σ = 87811710905856. Its totient is φ = 56157345474048.

The previous prime is 71161765515109. The next prime is 71161765515143. The reversal of 71161765515113 is 31151556716117.

It is not a de Polignac number, because 71161765515113 - 2² = 71161765515109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71161765515143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100412195 + ... + 101118407.

It is an arithmetic number, because the mean of its divisors is an integer number (2744115965808).

Almost surely, 2^{71161765515113} is an apocalyptic number.

It is an amenable number.

71161765515113 is a deficient number, since it is larger than the sum of its proper divisors (16649945390743).

71161765515113 is a wasteful number, since it uses less digits than its factorization.

71161765515113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709113.

The product of its digits is 661500, while the sum is 50.

The spelling of 71161765515113 in words is "seventy-one trillion, one hundred sixty-one billion, seven hundred sixty-five million, five hundred fifteen thousand, one hundred thirteen".