1643269061304 has 96 divisors (see below), whose sum is σ = 4793097254400. Its totient is φ = 505597075200.

The previous prime is 1643269061279. The next prime is 1643269061383. The reversal of 1643269061304 is 4031609623461.

1643269061304 is a `hidden beast` number, since 1 + 6 + 4 + 3 + 26 + 9 + 0 + 613 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1643269061304.

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, 36997542 + ... + 37041930.

It is an arithmetic number, because the mean of its divisors is an integer number (49928096400).

Almost surely, 2^{1643269061304} is an apocalyptic number.

It is an amenable number.

1643269061304 is an abundant number, since it is smaller than the sum of its proper divisors (3149828193096).

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

1643269061304 is a wasteful number, since it uses less digits than its factorization.

1643269061304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83965 (or 83958 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 1643269061304 in words is "one trillion, six hundred forty-three billion, two hundred sixty-nine million, sixty-one thousand, three hundred four".