66452045567 has 4 divisors (see below), whose sum is σ = 66898032600. Its totient is φ = 66006058536.

The previous prime is 66452045557. The next prime is 66452045599. The reversal of 66452045567 is 76554025466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66452045567 - 2⁶ = 66452045503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66452045557) 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, 222993293 + ... + 222993590.

It is an arithmetic number, because the mean of its divisors is an integer number (16724508150).

Almost surely, 2^66452045567 is an apocalyptic number.

66452045567 is a deficient number, since it is larger than the sum of its proper divisors (445987033).

66452045567 is a wasteful number, since it uses less digits than its factorization.

66452045567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445987032.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 66452045567 in words is "sixty-six billion, four hundred fifty-two million, forty-five thousand, five hundred sixty-seven".