409894518904468 has 72 divisors (see below), whose sum is σ = 801642350179944. Its totient is φ = 182293683886080.

The previous prime is 409894518904361. The next prime is 409894518904487. The reversal of 409894518904468 is 864409815498904.

It can be written as a sum of positive squares in 4 ways, for example, as 1655241779844 + 408239277124624 = 1286562^2 + 20204932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5958421 + ... + 29245372.

It is an arithmetic number, because the mean of its divisors is an integer number (11133921530277).

Almost surely, 2^{409894518904468} is an apocalyptic number.

It is an amenable number.

409894518904468 is a deficient number, since it is larger than the sum of its proper divisors (391747831275476).

409894518904468 is a wasteful number, since it uses less digits than its factorization.

409894518904468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35204105 (or 35204072 counting only the distinct ones).

The product of its (nonzero) digits is 2866544640, while the sum is 79.

The spelling of 409894518904468 in words is "four hundred nine trillion, eight hundred ninety-four billion, five hundred eighteen million, nine hundred four thousand, four hundred sixty-eight".