71002685448 has 108 divisors (see below), whose sum is σ = 198898580205. Its totient is φ = 22881481920.

The previous prime is 71002685447. The next prime is 71002685491. The reversal of 71002685448 is 84458620017.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

71002685448 is a `hidden beast` number, since 7 + 100 + 26 + 85 + 448 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38652346404 + 32350339044 = 196602^2 + 179862^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188418.

It is not an unprimeable number, because it can be changed into a prime (71002685443) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 70090990 + ... + 70092002.

Almost surely, 2^71002685448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71002685448

71002685448 is an abundant number, since it is smaller than the sum of its proper divisors (127895894757).

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

71002685448 is a wasteful number, since it uses less digits than its factorization.

71002685448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 71002685448 in words is "seventy-one billion, two million, six hundred eighty-five thousand, four hundred forty-eight".