43624350135421 has 6 divisors (see below), whose sum is σ = 47950731967166. Its totient is φ = 39658500123000.

The previous prime is 43624350135397. The next prime is 43624350135517. The reversal of 43624350135421 is 12453105342634.

It can be written as a sum of positive squares in only one way, i.e., 34711080175321 + 8913269960100 = 5891611^2 + 2985510^2 .

It is not a de Polignac number, because 43624350135421 - 2⁷ = 43624350135293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43624350135221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180265909530 + ... + 180265909771.

Almost surely, 2^{43624350135421} is an apocalyptic number.

It is an amenable number.

43624350135421 is a deficient number, since it is larger than the sum of its proper divisors (4326381831745).

43624350135421 is a wasteful number, since it uses less digits than its factorization.

43624350135421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360531819323 (or 360531819312 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 43624350135421 in words is "forty-three trillion, six hundred twenty-four billion, three hundred fifty million, one hundred thirty-five thousand, four hundred twenty-one".