66455255466 has 32 divisors (see below), whose sum is σ = 147749289600. Its totient is φ = 22141110240.

The previous prime is 66455255443. The next prime is 66455255473.

It is a happy number.

66455255466 is a `hidden beast` number, since 6 + 6 + 4 + 5 + 525 + 54 + 66 = 666.

66455255466 is nontrivially palindromic in base 10.

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, 181750 + ... + 407361.

It is an arithmetic number, because the mean of its divisors is an integer number (4617165300).

Almost surely, 2^66455255466 is an apocalyptic number.

66455255466 is an abundant number, since it is smaller than the sum of its proper divisors (81294034134).

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

66455255466 is a wasteful number, since it uses less digits than its factorization.

66455255466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591211 (or 591205 counting only the distinct ones).

The product of its digits is 25920000, while the sum is 54.

The spelling of 66455255466 in words is "sixty-six billion, four hundred fifty-five million, two hundred fifty-five thousand, four hundred sixty-six".