43143523061 has 4 divisors (see below), whose sum is σ = 43957551852. Its totient is φ = 42329494272.

The previous prime is 43143523043. The next prime is 43143523063. The reversal of 43143523061 is 16032534134.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31154368036 + 11989155025 = 176506^2 + 109495^2 .

It is a cyclic number.

It is not a de Polignac number, because 43143523061 - 2⁶ = 43143522997 is a prime.

It is a super-2 number, since 2×43143523061² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43143523063) 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, 407014316 + ... + 407014421.

It is an arithmetic number, because the mean of its divisors is an integer number (10989387963).

Almost surely, 2^43143523061 is an apocalyptic number.

It is an amenable number.

43143523061 is a deficient number, since it is larger than the sum of its proper divisors (814028791).

43143523061 is an equidigital number, since it uses as much as digits as its factorization.

43143523061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814028790.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 43143523061 in words is "forty-three billion, one hundred forty-three million, five hundred twenty-three thousand, sixty-one".