66466866466 has 96 divisors (see below), whose sum is σ = 135034623360. Its totient is φ = 23876328960.

The previous prime is 66466866463. The next prime is 66466866467.

66466866466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66466866398 and 66466866407.

It is not an unprimeable number, because it can be changed into a prime (66466866463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32789745 + ... + 32791771.

It is an arithmetic number, because the mean of its divisors is an integer number (1406610660).

Almost surely, 2^66466866466 is an apocalyptic number.

66466866466 is an abundant number, since it is smaller than the sum of its proper divisors (68567756894).

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

66466866466 is a wasteful number, since it uses less digits than its factorization.

66466866466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560 (or 3549 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 64.

The spelling of 66466866466 in words is "sixty-six billion, four hundred sixty-six million, eight hundred sixty-six thousand, four hundred sixty-six".