66452225465 has 4 divisors (see below), whose sum is σ = 79742670564. Its totient is φ = 53161780368.

The previous prime is 66452225453. The next prime is 66452225503. The reversal of 66452225465 is 56452225466.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42583211449 + 23869014016 = 206357^2 + 154496^2 .

It is a cyclic number.

It is not a de Polignac number, because 66452225465 - 2¹² = 66452221369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6645222542 + ... + 6645222551.

It is an arithmetic number, because the mean of its divisors is an integer number (19935667641).

Almost surely, 2^66452225465 is an apocalyptic number.

It is an amenable number.

66452225465 is a deficient number, since it is larger than the sum of its proper divisors (13290445099).

66452225465 is a wasteful number, since it uses less digits than its factorization.

66452225465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13290445098.

The product of its digits is 3456000, while the sum is 47.

Subtracting from 66452225465 its reverse (56452225466), we obtain a palindrome (9999999999).

The spelling of 66452225465 in words is "sixty-six billion, four hundred fifty-two million, two hundred twenty-five thousand, four hundred sixty-five".