71702170961 has 4 divisors (see below), whose sum is σ = 71712717552. Its totient is φ = 71691624372.

The previous prime is 71702170933. The next prime is 71702170979. The reversal of 71702170961 is 16907120717.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16907120717 = 733 ⋅23065649.

It is a cyclic number.

It is not a de Polignac number, because 71702170961 - 2³⁴ = 54522301777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71702170931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5263091 + ... + 5276696.

It is an arithmetic number, because the mean of its divisors is an integer number (17928179388).

Almost surely, 2^71702170961 is an apocalyptic number.

It is an amenable number.

71702170961 is a deficient number, since it is larger than the sum of its proper divisors (10546591).

71702170961 is a wasteful number, since it uses less digits than its factorization.

71702170961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10546590.

The product of its (nonzero) digits is 37044, while the sum is 41.

The spelling of 71702170961 in words is "seventy-one billion, seven hundred two million, one hundred seventy thousand, nine hundred sixty-one".