71064026280 has 192 divisors, whose sum is σ = 263355215760. Its totient is φ = 16463683584.

The previous prime is 71064026269. The next prime is 71064026287. The reversal of 71064026280 is 8262046017.

71064026280 is a `hidden beast` number, since 7 + 1 + 0 + 640 + 2 + 6 + 2 + 8 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 21269888964 + 49794137316 = 145842^2 + 223146^2 .

It is a super-2 number, since 2×71064026280² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (71064026287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 367047 + ... + 526166.

Almost surely, 2^71064026280 is an apocalyptic number.

It is an amenable number.

71064026280 is an abundant number, since it is smaller than the sum of its proper divisors (192291189480).

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

71064026280 is a wasteful number, since it uses less digits than its factorization.

71064026280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893260 (or 893253 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 71064026280 in words is "seventy-one billion, sixty-four million, twenty-six thousand, two hundred eighty".