1644114502223 has 4 divisors (see below), whose sum is σ = 1645483458048. Its totient is φ = 1642745546400.

The previous prime is 1644114502213. The next prime is 1644114502229. The reversal of 1644114502223 is 3222054114461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1644114502223 - 2²² = 1644110307919 is a prime.

It is a super-3 number, since 3×1644114502223³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1644114502229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684476111 + ... + 684478512.

It is an arithmetic number, because the mean of its divisors is an integer number (411370864512).

Almost surely, 2^{1644114502223} is an apocalyptic number.

1644114502223 is a deficient number, since it is larger than the sum of its proper divisors (1368955825).

1644114502223 is a wasteful number, since it uses less digits than its factorization.

1644114502223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368955824.

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 1644114502223 its reverse (3222054114461), we get a palindrome (4866168616684).

The spelling of 1644114502223 in words is "one trillion, six hundred forty-four billion, one hundred fourteen million, five hundred two thousand, two hundred twenty-three".