43144002021 has 4 divisors (see below), whose sum is σ = 57525336032. Its totient is φ = 28762668012.

The previous prime is 43144002001. The next prime is 43144002029. The reversal of 43144002021 is 12020044134.

43144002021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43144002021 - 2¹⁷ = 43143870949 is a prime.

It is a super-2 number, since 2×43144002021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43144002029) 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, 7190667001 + ... + 7190667006.

It is an arithmetic number, because the mean of its divisors is an integer number (14381334008).

Almost surely, 2^43144002021 is an apocalyptic number.

It is an amenable number.

43144002021 is a deficient number, since it is larger than the sum of its proper divisors (14381334011).

43144002021 is a wasteful number, since it uses less digits than its factorization.

43144002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14381334010.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 43144002021 its reverse (12020044134), we get a palindrome (55164046155).

The spelling of 43144002021 in words is "forty-three billion, one hundred forty-four million, two thousand, twenty-one".