1644874112264 has 32 divisors (see below), whose sum is σ = 3095496818400. Its totient is φ = 819413262720.

The previous prime is 1644874112261. The next prime is 1644874112317. The reversal of 1644874112264 is 4622114784461.

It is a super-2 number, since 2×1644874112264² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1644874112261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2343659 + ... + 2963525.

It is an arithmetic number, because the mean of its divisors is an integer number (96734275575).

Almost surely, 2^{1644874112264} is an apocalyptic number.

It is an amenable number.

1644874112264 is a deficient number, since it is larger than the sum of its proper divisors (1450622706136).

1644874112264 is a wasteful number, since it uses less digits than its factorization.

1644874112264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621093 (or 621089 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 50.

The spelling of 1644874112264 in words is "one trillion, six hundred forty-four billion, eight hundred seventy-four million, one hundred twelve thousand, two hundred sixty-four".