409646494495 has 32 divisors (see below), whose sum is σ = 571294459008. Its totient is φ = 276177973248.

The previous prime is 409646494493. The next prime is 409646494501. The reversal of 409646494495 is 594494646904.

It is a cyclic number.

It is not a de Polignac number, because 409646494495 - 2¹ = 409646494493 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409646494493) 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 31 ways as a sum of consecutive naturals, for example, 557047 + ... + 1062823.

It is an arithmetic number, because the mean of its divisors is an integer number (17852951844).

Almost surely, 2^409646494495 is an apocalyptic number.

409646494495 is a deficient number, since it is larger than the sum of its proper divisors (161647964513).

409646494495 is a wasteful number, since it uses less digits than its factorization.

409646494495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506179.

The product of its (nonzero) digits is 134369280, while the sum is 64.

The spelling of 409646494495 in words is "four hundred nine billion, six hundred forty-six million, four hundred ninety-four thousand, four hundred ninety-five".