2165334019904 has 56 divisors (see below), whose sum is σ = 4934164274400. Its totient is φ = 932440481280.

The previous prime is 2165334019883. The next prime is 2165334019913. The reversal of 2165334019904 is 4099104335612.

It is a congruent number.

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, 80927639 + ... + 80954390.

Almost surely, 2^{2165334019904} is an apocalyptic number.

It is an amenable number.

2165334019904 is an abundant number, since it is smaller than the sum of its proper divisors (2768830254496).

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

2165334019904 is a wasteful number, since it uses less digits than its factorization.

2165334019904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161882071 (or 161882061 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 2165334019904 in words is "two trillion, one hundred sixty-five billion, three hundred thirty-four million, nineteen thousand, nine hundred four".