75665477566 has 16 divisors (see below), whose sum is σ = 132472083456. Its totient is φ = 31738102776.

The previous prime is 75665477557. The next prime is 75665477593. The reversal of 75665477566 is 66577456657.

It is a junction number, because it is equal to n+sod(n) for n = 75665477498 and 75665477507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57495906 + ... + 57497221.

It is an arithmetic number, because the mean of its divisors is an integer number (8279505216).

Almost surely, 2^75665477566 is an apocalyptic number.

75665477566 is a deficient number, since it is larger than the sum of its proper divisors (56806605890).

75665477566 is a wasteful number, since it uses less digits than its factorization.

75665477566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114993183.

The product of its digits is 222264000, while the sum is 64.

The spelling of 75665477566 in words is "seventy-five billion, six hundred sixty-five million, four hundred seventy-seven thousand, five hundred sixty-six".