43621296138559 has 2 divisors, whose sum is σ = 43621296138560. Its totient is φ = 43621296138558.

The previous prime is 43621296138547. The next prime is 43621296138571. The reversal of 43621296138559 is 95583169212634.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (43621296138547) and next prime (43621296138571).

It is a cyclic number.

It is not a de Polignac number, because 43621296138559 - 2²⁵ = 43621262584127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43621296138559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43621296138509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21810648069279 + 21810648069280.

It is an arithmetic number, because the mean of its divisors is an integer number (21810648069280).

Almost surely, 2^{43621296138559} is an apocalyptic number.

43621296138559 is a deficient number, since it is larger than the sum of its proper divisors (1).

43621296138559 is an equidigital number, since it uses as much as digits as its factorization.

43621296138559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83980800, while the sum is 64.

The spelling of 43621296138559 in words is "forty-three trillion, six hundred twenty-one billion, two hundred ninety-six million, one hundred thirty-eight thousand, five hundred fifty-nine".