43000005500449 has 2 divisors, whose sum is σ = 43000005500450. Its totient is φ = 43000005500448.

The previous prime is 43000005500363. The next prime is 43000005500453. The reversal of 43000005500449 is 94400550000034.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27302506032400 + 15697499468049 = 5225180^2 + 3962007^2 .

It is a cyclic number.

It is not a de Polignac number, because 43000005500449 - 2²⁷ = 42999871282721 is a prime.

It is not a weakly prime, because it can be changed into another prime (43000005503449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21500002750224 + 21500002750225.

It is an arithmetic number, because the mean of its divisors is an integer number (21500002750225).

Almost surely, 2^{43000005500449} is an apocalyptic number.

It is an amenable number.

43000005500449 is a deficient number, since it is larger than the sum of its proper divisors (1).

43000005500449 is an equidigital number, since it uses as much as digits as its factorization.

43000005500449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 43000005500449 in words is "forty-three trillion, five million, five hundred thousand, four hundred forty-nine".