65567055566 has 8 divisors (see below), whose sum is σ = 98367906504. Its totient is φ = 32777753400.

The previous prime is 65567055563. The next prime is 65567055583. The reversal of 65567055566 is 66555076556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65567055563) 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, 2872985 + ... + 2895716.

It is an arithmetic number, because the mean of its divisors is an integer number (12295988313).

Almost surely, 2^65567055566 is an apocalyptic number.

65567055566 is a deficient number, since it is larger than the sum of its proper divisors (32800850938).

65567055566 is a wasteful number, since it uses less digits than its factorization.

65567055566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774386.

The product of its (nonzero) digits is 28350000, while the sum is 56.

The spelling of 65567055566 in words is "sixty-five billion, five hundred sixty-seven million, fifty-five thousand, five hundred sixty-six".