43620428029 has 4 divisors (see below), whose sum is σ = 43627876380. Its totient is φ = 43612979680.

The previous prime is 43620427973. The next prime is 43620428143. The reversal of 43620428029 is 92082402634.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9057899929 + 34562528100 = 95173^2 + 185910^2 .

It is a cyclic number.

It is not a de Polignac number, because 43620428029 - 2²⁷ = 43486210301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43620427982 and 43620428000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43620428429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3715384 + ... + 3727105.

It is an arithmetic number, because the mean of its divisors is an integer number (10906969095).

Almost surely, 2^43620428029 is an apocalyptic number.

It is an amenable number.

43620428029 is a deficient number, since it is larger than the sum of its proper divisors (7448351).

43620428029 is an equidigital number, since it uses as much as digits as its factorization.

43620428029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448350.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 43620428029 in words is "forty-three billion, six hundred twenty million, four hundred twenty-eight thousand, twenty-nine".