43145424136181 has 2 divisors, whose sum is σ = 43145424136182. Its totient is φ = 43145424136180.

The previous prime is 43145424136069. The next prime is 43145424136193. The reversal of 43145424136181 is 18163142454134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40322385700081 + 2823038436100 = 6349991^2 + 1680190^2 .

It is a cyclic number.

It is not a de Polignac number, because 43145424136181 - 2¹⁴ = 43145424119797 is a prime.

It is a super-2 number, since 2×43145424136181² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43145424156181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21572712068090 + 21572712068091.

It is an arithmetic number, because the mean of its divisors is an integer number (21572712068091).

Almost surely, 2^{43145424136181} is an apocalyptic number.

It is an amenable number.

43145424136181 is a deficient number, since it is larger than the sum of its proper divisors (1).

43145424136181 is an equidigital number, since it uses as much as digits as its factorization.

43145424136181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 47.

The spelling of 43145424136181 in words is "forty-three trillion, one hundred forty-five billion, four hundred twenty-four million, one hundred thirty-six thousand, one hundred eighty-one".