666454380048 has 30 divisors (see below), whose sum is σ = 1865146633454. Its totient is φ = 222151459968.

The previous prime is 666454380013. The next prime is 666454380073. The reversal of 666454380048 is 840083454666.

It can be written as a sum of positive squares in only one way, i.e., 365724981504 + 300729398544 = 604752^2 + 548388^2 .

It is a super-2 number, since 2×666454380048² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666454379976 and 666454380003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2314077565 + ... + 2314077852.

Almost surely, 2^666454380048 is an apocalyptic number.

It is an amenable number.

666454380048 is an abundant number, since it is smaller than the sum of its proper divisors (1198692253406).

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

666454380048 is a wasteful number, since it uses less digits than its factorization.

666454380048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628155431 (or 4628155422 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 666454380048 in words is "six hundred sixty-six billion, four hundred fifty-four million, three hundred eighty thousand, forty-eight".