43155220256 has 24 divisors (see below), whose sum is σ = 89959596300. Its totient is φ = 20308338688.

The previous prime is 43155220253. The next prime is 43155220261. The reversal of 43155220256 is 65202255134.

It can be written as a sum of positive squares in 2 ways, for example, as 39593040400 + 3562179856 = 198980^2 + 59684^2 .

It is not an unprimeable number, because it can be changed into a prime (43155220253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39664181 + ... + 39665268.

Almost surely, 2^43155220256 is an apocalyptic number.

It is an amenable number.

43155220256 is an abundant number, since it is smaller than the sum of its proper divisors (46804376044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43155220256 is a wasteful number, since it uses less digits than its factorization.

43155220256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79329476 (or 79329468 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 43155220256 in words is "forty-three billion, one hundred fifty-five million, two hundred twenty thousand, two hundred fifty-six".