71161667720706 has 16 divisors (see below), whose sum is σ = 143362191906144. Its totient is φ = 23547413162784.

The previous prime is 71161667720681. The next prime is 71161667720723. The reversal of 71161667720706 is 60702776616117.

It is a super-2 number, since 2×71161667720706² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43285685140 + ... + 43285686783.

It is an arithmetic number, because the mean of its divisors is an integer number (8960136994134).

Almost surely, 2^{71161667720706} is an apocalyptic number.

71161667720706 is an abundant number, since it is smaller than the sum of its proper divisors (72200524185438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71161667720706 is a wasteful number, since it uses less digits than its factorization.

71161667720706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86571372065.

The product of its (nonzero) digits is 6223392, while the sum is 57.

The spelling of 71161667720706 in words is "seventy-one trillion, one hundred sixty-one billion, six hundred sixty-seven million, seven hundred twenty thousand, seven hundred six".