66458344385466 has 24 divisors (see below), whose sum is σ = 157083359457024. Its totient is φ = 20138892237960.

The previous prime is 66458344385441. The next prime is 66458344385479.

It is a happy number.

66458344385466 is a `hidden beast` number, since 6 + 6 + 4 + 5 + 8 + 3 + 44 + 38 + 546 + 6 = 666.

66458344385466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66458344385394 and 66458344385403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167824101786 + ... + 167824102181.

It is an arithmetic number, because the mean of its divisors is an integer number (6545139977376).

Almost surely, 2^{66458344385466} is an apocalyptic number.

66458344385466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66458344385466 is an abundant number, since it is smaller than the sum of its proper divisors (90625015071558).

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

66458344385466 is a wasteful number, since it uses less digits than its factorization.

66458344385466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335648203986 (or 335648203983 counting only the distinct ones).

The product of its digits is 4777574400, while the sum is 72.

The spelling of 66458344385466 in words is "sixty-six trillion, four hundred fifty-eight billion, three hundred forty-four million, three hundred eighty-five thousand, four hundred sixty-six".