43032215155 has 4 divisors (see below), whose sum is σ = 51638658192. Its totient is φ = 34425772120.

The previous prime is 43032215153. The next prime is 43032215159. The reversal of 43032215155 is 55151223034.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55151223034 = 2 ⋅27575611517.

It is not a de Polignac number, because 43032215155 - 2¹ = 43032215153 is a prime.

It is a super-2 number, since 2×43032215155² (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 (43032215153) 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, 4303221511 + ... + 4303221520.

It is an arithmetic number, because the mean of its divisors is an integer number (12909664548).

Almost surely, 2^43032215155 is an apocalyptic number.

43032215155 is a deficient number, since it is larger than the sum of its proper divisors (8606443037).

43032215155 is an equidigital number, since it uses as much as digits as its factorization.

43032215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8606443036.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 43032215155 its reverse (55151223034), we get a palindrome (98183438189).

The spelling of 43032215155 in words is "forty-three billion, thirty-two million, two hundred fifteen thousand, one hundred fifty-five".