71628812307 has 24 divisors (see below), whose sum is σ = 111431684000. Its totient is φ = 44075674368.

The previous prime is 71628812287. The next prime is 71628812351. The reversal of 71628812307 is 70321882617.

71628812307 is a `hidden beast` number, since 7 + 1 + 628 + 8 + 12 + 3 + 0 + 7 = 666.

It is not a de Polignac number, because 71628812307 - 2⁶ = 71628812243 is a prime.

It is a super-2 number, since 2×71628812307² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71628812407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2518794 + ... + 2547072.

Almost surely, 2^71628812307 is an apocalyptic number.

71628812307 is a deficient number, since it is larger than the sum of its proper divisors (39802871693).

71628812307 is a wasteful number, since it uses less digits than its factorization.

71628812307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49947 (or 49944 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 71628812307 in words is "seventy-one billion, six hundred twenty-eight million, eight hundred twelve thousand, three hundred seven".