668081407480 has 32 divisors (see below), whose sum is σ = 1504153728000. Its totient is φ = 267060018816.

The previous prime is 668081407453. The next prime is 668081407493. The reversal of 668081407480 is 84704180866.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5329272 + ... + 5453191.

It is an arithmetic number, because the mean of its divisors is an integer number (47004804000).

Almost surely, 2^668081407480 is an apocalyptic number.

It is an amenable number.

668081407480 is an abundant number, since it is smaller than the sum of its proper divisors (836072320520).

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

668081407480 is a wasteful number, since it uses less digits than its factorization.

668081407480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10784023 (or 10784019 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 668081407480 in words is "six hundred sixty-eight billion, eighty-one million, four hundred seven thousand, four hundred eighty".