43755482421 has 120 divisors (see below), whose sum is σ = 77377718880. Its totient is φ = 24565197888.

The previous prime is 43755482411. The next prime is 43755482429. The reversal of 43755482421 is 12428455734.

It is not a de Polignac number, because 43755482421 - 2⁶ = 43755482357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43755482429) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 104428150 + ... + 104428568.

It is an arithmetic number, because the mean of its divisors is an integer number (644814324).

Almost surely, 2^43755482421 is an apocalyptic number.

It is an amenable number.

43755482421 is a deficient number, since it is larger than the sum of its proper divisors (33622236459).

43755482421 is a wasteful number, since it uses less digits than its factorization.

43755482421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 829 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The spelling of 43755482421 in words is "forty-three billion, seven hundred fifty-five million, four hundred eighty-two thousand, four hundred twenty-one".