43143256653 has 16 divisors (see below), whose sum is σ = 65750146176. Its totient is φ = 24650274240.

The previous prime is 43143256649. The next prime is 43143256679. The reversal of 43143256653 is 35665234134.

It is not a de Polignac number, because 43143256653 - 2² = 43143256649 is a prime.

It is a super-2 number, since 2×43143256653² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43143256613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56275 + ... + 299087.

It is an arithmetic number, because the mean of its divisors is an integer number (4109384136).

Almost surely, 2^43143256653 is an apocalyptic number.

It is an amenable number.

43143256653 is a deficient number, since it is larger than the sum of its proper divisors (22606889523).

43143256653 is a wasteful number, since it uses less digits than its factorization.

43143256653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251284.

The product of its digits is 777600, while the sum is 42.

The spelling of 43143256653 in words is "forty-three billion, one hundred forty-three million, two hundred fifty-six thousand, six hundred fifty-three".