66445454466 has 32 divisors (see below), whose sum is σ = 147799629120. Its totient is φ = 22127025312.

The previous prime is 66445454447. The next prime is 66445454479.

66445454466 is a `hidden beast` number, since 6 + 6 + 44 + 54 + 544 + 6 + 6 = 666.

66445454466 is nontrivially palindromic in base 10.

66445454466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539800 + ... + 651363.

It is an arithmetic number, because the mean of its divisors is an integer number (4618738410).

Almost surely, 2^66445454466 is an apocalyptic number.

66445454466 is an abundant number, since it is smaller than the sum of its proper divisors (81354174654).

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

66445454466 is a wasteful number, since it uses less digits than its factorization.

66445454466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192207 (or 1192201 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 54.

The spelling of 66445454466 in words is "sixty-six billion, four hundred forty-five million, four hundred fifty-four thousand, four hundred sixty-six".