66468486466 has 4 divisors (see below), whose sum is σ = 99702729702. Its totient is φ = 33234243232.

The previous prime is 66468486457. The next prime is 66468486517.

It is a happy number.

66468486466 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 48587180625 + 17881305841 = 220425^2 + 133721^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66468486398 and 66468486407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16617121615 + ... + 16617121618.

Almost surely, 2^66468486466 is an apocalyptic number.

66468486466 is a deficient number, since it is larger than the sum of its proper divisors (33234243236).

66468486466 is a wasteful number, since it uses less digits than its factorization.

66468486466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33234243235.

The product of its digits is 191102976, while the sum is 64.

The spelling of 66468486466 in words is "sixty-six billion, four hundred sixty-eight million, four hundred eighty-six thousand, four hundred sixty-six".