408260668866 has 16 divisors (see below), whose sum is σ = 816565476384. Its totient is φ = 136079533184.

The previous prime is 408260668859. The next prime is 408260668877. The reversal of 408260668866 is 668866062804.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1718256 + ... + 1941371.

It is an arithmetic number, because the mean of its divisors is an integer number (51035342274).

Almost surely, 2^408260668866 is an apocalyptic number.

408260668866 is an abundant number, since it is smaller than the sum of its proper divisors (408304807518).

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

408260668866 is a wasteful number, since it uses less digits than its factorization.

408260668866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678225.

The product of its (nonzero) digits is 31850496, while the sum is 60.

The spelling of 408260668866 in words is "four hundred eight billion, two hundred sixty million, six hundred sixty-eight thousand, eight hundred sixty-six".