43130221549 has 4 divisors (see below), whose sum is σ = 43178847264. Its totient is φ = 43081595836.

The previous prime is 43130221499. The next prime is 43130221571. The reversal of 43130221549 is 94512203134.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94512203134 = 2 ⋅47256101567.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43130221549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43130222549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24311527 + ... + 24313300.

It is an arithmetic number, because the mean of its divisors is an integer number (10794711816).

Almost surely, 2^43130221549 is an apocalyptic number.

It is an amenable number.

43130221549 is a deficient number, since it is larger than the sum of its proper divisors (48625715).

43130221549 is an equidigital number, since it uses as much as digits as its factorization.

43130221549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48625714.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 43130221549 in words is "forty-three billion, one hundred thirty million, two hundred twenty-one thousand, five hundred forty-nine".