43255778155 has 4 divisors (see below), whose sum is σ = 51906933792. Its totient is φ = 34604622520.

The previous prime is 43255778141. The next prime is 43255778201. The reversal of 43255778155 is 55187755234.

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

It is not a de Polignac number, because 43255778155 - 2⁵ = 43255778123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 4325577811 + ... + 4325577820.

It is an arithmetic number, because the mean of its divisors is an integer number (12976733448).

Almost surely, 2^43255778155 is an apocalyptic number.

43255778155 is a deficient number, since it is larger than the sum of its proper divisors (8651155637).

43255778155 is an equidigital number, since it uses as much as digits as its factorization.

43255778155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8651155636.

The product of its digits is 5880000, while the sum is 52.

The spelling of 43255778155 in words is "forty-three billion, two hundred fifty-five million, seven hundred seventy-eight thousand, one hundred fifty-five".