43604240121499 has 2 divisors, whose sum is σ = 43604240121500. Its totient is φ = 43604240121498.

The previous prime is 43604240121461. The next prime is 43604240121557. The reversal of 43604240121499 is 99412104240634.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43604240121499 is a prime.

It is not a weakly prime, because it can be changed into another prime (43604240121599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21802120060749 + 21802120060750.

It is an arithmetic number, because the mean of its divisors is an integer number (21802120060750).

Almost surely, 2^{43604240121499} is an apocalyptic number.

43604240121499 is a deficient number, since it is larger than the sum of its proper divisors (1).

43604240121499 is an equidigital number, since it uses as much as digits as its factorization.

43604240121499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 43604240121499 in words is "forty-three trillion, six hundred four billion, two hundred forty million, one hundred twenty-one thousand, four hundred ninety-nine".