1646413413204 has 96 divisors (see below), whose sum is σ = 4511822515200. Its totient is φ = 457492025088.

The previous prime is 1646413413179. The next prime is 1646413413221. The reversal of 1646413413204 is 4023143146461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136554 + ... + 1819745.

It is an arithmetic number, because the mean of its divisors is an integer number (46998151200).

Almost surely, 2^{1646413413204} is an apocalyptic number.

1646413413204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1646413413204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2255911257600).

1646413413204 is an abundant number, since it is smaller than the sum of its proper divisors (2865409101996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1646413413204 is a wasteful number, since it uses less digits than its factorization.

1646413413204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956589 (or 1956587 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

Adding to 1646413413204 its reverse (4023143146461), we get a palindrome (5669556559665).

The spelling of 1646413413204 in words is "one trillion, six hundred forty-six billion, four hundred thirteen million, four hundred thirteen thousand, two hundred four".