43641164042021 has 16 divisors (see below), whose sum is σ = 53765224915584. Its totient is φ = 34495186423104.

The previous prime is 43641164041997. The next prime is 43641164042053. The reversal of 43641164042021 is 12024046114634.

It is a cyclic number.

It is not a de Polignac number, because 43641164042021 - 2⁶ = 43641164041957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43641164042221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236617211 + ... + 236801576.

It is an arithmetic number, because the mean of its divisors is an integer number (3360326557224).

Almost surely, 2^{43641164042021} is an apocalyptic number.

It is an amenable number.

43641164042021 is a deficient number, since it is larger than the sum of its proper divisors (10124060873563).

43641164042021 is a wasteful number, since it uses less digits than its factorization.

43641164042021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473419820.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 43641164042021 in words is "forty-three trillion, six hundred forty-one billion, one hundred sixty-four million, forty-two thousand, twenty-one".