43345434453021 has 32 divisors (see below), whose sum is σ = 67995703653120. Its totient is φ = 27195989225472.

The previous prime is 43345434453017. The next prime is 43345434453029. The reversal of 43345434453021 is 12035443454334.

43345434453021 is a `hidden beast` number, since 4 + 3 + 3 + 4 + 54 + 3 + 44 + 530 + 21 = 666.

It is not a de Polignac number, because 43345434453021 - 2² = 43345434453017 is a prime.

It is a super-2 number, since 2×43345434453021² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43345434453029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8979856 + ... + 12935558.

It is an arithmetic number, because the mean of its divisors is an integer number (2124865739160).

Almost surely, 2^{43345434453021} is an apocalyptic number.

It is an amenable number.

43345434453021 is a deficient number, since it is larger than the sum of its proper divisors (24650269200099).

43345434453021 is a wasteful number, since it uses less digits than its factorization.

43345434453021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979602 (or 3979596 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 45.

The spelling of 43345434453021 in words is "forty-three trillion, three hundred forty-five billion, four hundred thirty-four million, four hundred fifty-three thousand, twenty-one".