43355235052221 has 16 divisors (see below), whose sum is σ = 60557290348800. Its totient is φ = 27553567099968.

The previous prime is 43355235052193. The next prime is 43355235052231. The reversal of 43355235052221 is 12225053255334.

It is not a de Polignac number, because 43355235052221 - 2²⁶ = 43355167943357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43355235052231) 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, 3154018666 + ... + 3154032411.

It is an arithmetic number, because the mean of its divisors is an integer number (3784830646800).

Almost surely, 2^{43355235052221} is an apocalyptic number.

It is an amenable number.

43355235052221 is a deficient number, since it is larger than the sum of its proper divisors (17202055296579).

43355235052221 is a wasteful number, since it uses less digits than its factorization.

43355235052221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308051188.

The product of its (nonzero) digits is 1080000, while the sum is 42.

The spelling of 43355235052221 in words is "forty-three trillion, three hundred fifty-five billion, two hundred thirty-five million, fifty-two thousand, two hundred twenty-one".