66487411478466 has 24 divisors (see below), whose sum is σ = 157152063495024. Its totient is φ = 20147700447960.

The previous prime is 66487411478459. The next prime is 66487411478471.

66487411478466 is a `hidden beast` number, since 6 + 6 + 4 + 87 + 4 + 1 + 14 + 78 + 466 = 666.

66487411478466 is nontrivially palindromic in base 10.

66487411478466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66487411478394 and 66487411478403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167897503536 + ... + 167897503931.

It is an arithmetic number, because the mean of its divisors is an integer number (6548002645626).

Almost surely, 2^{66487411478466} is an apocalyptic number.

66487411478466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66487411478466 is an abundant number, since it is smaller than the sum of its proper divisors (90664652016558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66487411478466 is a wasteful number, since it uses less digits than its factorization.

66487411478466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335795007486 (or 335795007483 counting only the distinct ones).

The product of its digits is 1040449536, while the sum is 72.

The spelling of 66487411478466 in words is "sixty-six trillion, four hundred eighty-seven billion, four hundred eleven million, four hundred seventy-eight thousand, four hundred sixty-six".