66478887466 has 8 divisors (see below), whose sum is σ = 104966664480. Its totient is φ = 31489999308.

The previous prime is 66478887437. The next prime is 66478887473.

66478887466 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 66478887395 and 66478887404.

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, 874722166 + ... + 874722241.

It is an arithmetic number, because the mean of its divisors is an integer number (13120833060).

Almost surely, 2^66478887466 is an apocalyptic number.

66478887466 is a deficient number, since it is larger than the sum of its proper divisors (38487777014).

66478887466 is a wasteful number, since it uses less digits than its factorization.

66478887466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749444428.

The product of its digits is 520224768, while the sum is 70.

The spelling of 66478887466 in words is "sixty-six billion, four hundred seventy-eight million, eight hundred eighty-seven thousand, four hundred sixty-six".