71706122064 has 30 divisors (see below), whose sum is σ = 200677550346. Its totient is φ = 23902040640.

The previous prime is 71706122057. The next prime is 71706122141. The reversal of 71706122064 is 46022160717.

71706122064 is a `hidden beast` number, since 7 + 17 + 0 + 612 + 20 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38217122064 + 33489000000 = 195492^2 + 183000^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248979447 + ... + 248979734.

Almost surely, 2^71706122064 is an apocalyptic number.

It is an amenable number.

71706122064 is an abundant number, since it is smaller than the sum of its proper divisors (128971428282).

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

71706122064 is a wasteful number, since it uses less digits than its factorization.

71706122064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497959195 (or 497959186 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

It can be divided in two parts, 717061220 and 64, that added together give a square (717061284 = 26778²).

The spelling of 71706122064 in words is "seventy-one billion, seven hundred six million, one hundred twenty-two thousand, sixty-four".