43143529649 has 4 divisors (see below), whose sum is σ = 47065668720. Its totient is φ = 39221390580.

The previous prime is 43143529643. The next prime is 43143529673. The reversal of 43143529649 is 94692534134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43143529649 - 2¹⁶ = 43143464113 is a prime.

It is a super-2 number, since 2×43143529649² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43143529597 and 43143529606.

It is not an unprimeable number, because it can be changed into a prime (43143529643) 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, 1961069519 + ... + 1961069540.

It is an arithmetic number, because the mean of its divisors is an integer number (11766417180).

Almost surely, 2^43143529649 is an apocalyptic number.

It is an amenable number.

43143529649 is a deficient number, since it is larger than the sum of its proper divisors (3922139071).

43143529649 is a wasteful number, since it uses less digits than its factorization.

43143529649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922139070.

The product of its digits is 2799360, while the sum is 50.

The spelling of 43143529649 in words is "forty-three billion, one hundred forty-three million, five hundred twenty-nine thousand, six hundred forty-nine".