405509270668 has 12 divisors (see below), whose sum is σ = 719362336840. Its totient is φ = 199977174432.

The previous prime is 405509270659. The next prime is 405509270693. The reversal of 405509270668 is 866072905504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694364898 + ... + 694365481.

Almost surely, 2^405509270668 is an apocalyptic number.

It is an amenable number.

405509270668 is a deficient number, since it is larger than the sum of its proper divisors (313853066172).

405509270668 is a wasteful number, since it uses less digits than its factorization.

405509270668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388730456 (or 1388730454 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 405509270668 in words is "four hundred five billion, five hundred nine million, two hundred seventy thousand, six hundred sixty-eight".