43040245555 has 4 divisors (see below), whose sum is σ = 51648294672. Its totient is φ = 34432196440.

The previous prime is 43040245543. The next prime is 43040245561. The reversal of 43040245555 is 55554204034.

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

It is not a de Polignac number, because 43040245555 - 2⁷ = 43040245427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4304024551 + ... + 4304024560.

It is an arithmetic number, because the mean of its divisors is an integer number (12912073668).

Almost surely, 2^43040245555 is an apocalyptic number.

43040245555 is a deficient number, since it is larger than the sum of its proper divisors (8608049117).

43040245555 is an equidigital number, since it uses as much as digits as its factorization.

43040245555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8608049116.

The product of its (nonzero) digits is 240000, while the sum is 37.

Adding to 43040245555 its reverse (55554204034), we get a palindrome (98594449589).

The spelling of 43040245555 in words is "forty-three billion, forty million, two hundred forty-five thousand, five hundred fifty-five".