43053918019 has 4 divisors (see below), whose sum is σ = 49204477744. Its totient is φ = 36903358296.

The previous prime is 43053917993. The next prime is 43053918029. The reversal of 43053918019 is 91081935034.

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

It is not a de Polignac number, because 43053918019 - 2²⁵ = 43020363587 is a prime.

It is a super-2 number, since 2×43053918019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43053918029) 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, 3075279852 + ... + 3075279865.

It is an arithmetic number, because the mean of its divisors is an integer number (12301119436).

Almost surely, 2^43053918019 is an apocalyptic number.

43053918019 is a deficient number, since it is larger than the sum of its proper divisors (6150559725).

43053918019 is an equidigital number, since it uses as much as digits as its factorization.

43053918019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150559724.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 43053918019 in words is "forty-three billion, fifty-three million, nine hundred eighteen thousand, nineteen".