43620652066 has 4 divisors (see below), whose sum is σ = 65430978102. Its totient is φ = 21810326032.

The previous prime is 43620651989. The next prime is 43620652073. The reversal of 43620652066 is 66025602634.

43620652066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 33924114225 + 9696537841 = 184185^2 + 98471^2 .

It is a super-2 number, since 2×43620652066² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10905163015 + ... + 10905163018.

Almost surely, 2^43620652066 is an apocalyptic number.

43620652066 is a deficient number, since it is larger than the sum of its proper divisors (21810326036).

43620652066 is a wasteful number, since it uses less digits than its factorization.

43620652066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21810326035.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 43620652066 in words is "forty-three billion, six hundred twenty million, six hundred fifty-two thousand, sixty-six".