408518649393 has 16 divisors (see below), whose sum is σ = 574326434880. Its totient is φ = 257576661504.

The previous prime is 408518649293. The next prime is 408518649443. The reversal of 408518649393 is 393946815804.

It is a de Polignac number, because none of the positive numbers 2^k-408518649393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (408518649293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6009196 + ... + 6076797.

It is an arithmetic number, because the mean of its divisors is an integer number (35895402180).

Almost surely, 2^408518649393 is an apocalyptic number.

It is an amenable number.

408518649393 is a deficient number, since it is larger than the sum of its proper divisors (165807785487).

408518649393 is a wasteful number, since it uses less digits than its factorization.

408518649393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12086608.

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 408518649393 in words is "four hundred eight billion, five hundred eighteen million, six hundred forty-nine thousand, three hundred ninety-three".