66427472466 has 32 divisors (see below), whose sum is σ = 150757390080. Its totient is φ = 21671373168.

The previous prime is 66427472401. The next prime is 66427472467.

66427472466 is a `hidden beast` number, since 6 + 6 + 42 + 74 + 72 + 466 = 666.

66427472466 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66427472467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13084041 + ... + 13089116.

It is an arithmetic number, because the mean of its divisors is an integer number (4711168440).

Almost surely, 2^66427472466 is an apocalyptic number.

66427472466 is an abundant number, since it is smaller than the sum of its proper divisors (84329917614).

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

66427472466 is a wasteful number, since it uses less digits than its factorization.

66427472466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26173215 (or 26173209 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 54.

The spelling of 66427472466 in words is "sixty-six billion, four hundred twenty-seven million, four hundred seventy-two thousand, four hundred sixty-six".