75686487568 has 20 divisors (see below), whose sum is σ = 146658867820. Its totient is φ = 37839037824.

The previous prime is 75686487563. The next prime is 75686487571. The reversal of 75686487568 is 86578468657.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46557555984 + 29128931584 = 215772^2 + 170672^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75686487497 and 75686487506.

It is not an unprimeable number, because it can be changed into a prime (75686487563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111783 + ... + 404806.

It is an arithmetic number, because the mean of its divisors is an integer number (7332943391).

Almost surely, 2^75686487568 is an apocalyptic number.

It is an amenable number.

75686487568 is a deficient number, since it is larger than the sum of its proper divisors (70972380252).

75686487568 is a wasteful number, since it uses less digits than its factorization.

75686487568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525754 (or 525748 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 70.

The spelling of 75686487568 in words is "seventy-five billion, six hundred eighty-six million, four hundred eighty-seven thousand, five hundred sixty-eight".