409557987652 has 24 divisors (see below), whose sum is σ = 800066770272. Its totient is φ = 181833355200.

The previous prime is 409557987649. The next prime is 409557987691. The reversal of 409557987652 is 256789755904.

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, 108232249 + ... + 108236032.

It is an arithmetic number, because the mean of its divisors is an integer number (33336115428).

Almost surely, 2^409557987652 is an apocalyptic number.

It is an amenable number.

409557987652 is a deficient number, since it is larger than the sum of its proper divisors (390508782620).

409557987652 is a wasteful number, since it uses less digits than its factorization.

409557987652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216468339 (or 216468337 counting only the distinct ones).

The product of its (nonzero) digits is 190512000, while the sum is 67.

The spelling of 409557987652 in words is "four hundred nine billion, five hundred fifty-seven million, nine hundred eighty-seven thousand, six hundred fifty-two".