66452045443 has 16 divisors (see below), whose sum is σ = 76211833600. Its totient is φ = 56759131296.

The previous prime is 66452045431. The next prime is 66452045449. The reversal of 66452045443 is 34454025466.

It is not a de Polignac number, because 66452045443 - 2²⁵ = 66418491011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66452045443.

It is not an unprimeable number, because it can be changed into a prime (66452045449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4201396 + ... + 4217182.

It is an arithmetic number, because the mean of its divisors is an integer number (4763239600).

Almost surely, 2^66452045443 is an apocalyptic number.

66452045443 is a deficient number, since it is larger than the sum of its proper divisors (9759788157).

66452045443 is a wasteful number, since it uses less digits than its factorization.

66452045443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17866.

The product of its (nonzero) digits is 1382400, while the sum is 43.

The spelling of 66452045443 in words is "sixty-six billion, four hundred fifty-two million, forty-five thousand, four hundred forty-three".