1621632320059 has 2 divisors, whose sum is σ = 1621632320060. Its totient is φ = 1621632320058.

The previous prime is 1621632319991. The next prime is 1621632320071. The reversal of 1621632320059 is 9500232361261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1621632320059 - 2¹⁷ = 1621632188987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1621632320159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810816160029 + 810816160030.

It is an arithmetic number, because the mean of its divisors is an integer number (810816160030).

Almost surely, 2^{1621632320059} is an apocalyptic number.

1621632320059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1621632320059 is an equidigital number, since it uses as much as digits as its factorization.

1621632320059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 1621632320059 in words is "one trillion, six hundred twenty-one billion, six hundred thirty-two million, three hundred twenty thousand, fifty-nine".