2491622359579 has 2 divisors, whose sum is σ = 2491622359580. Its totient is φ = 2491622359578.

The previous prime is 2491622359573. The next prime is 2491622359627. The reversal of 2491622359579 is 9759532261942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2491622359579 - 2⁹ = 2491622359067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2491622359579.

It is not a weakly prime, because it can be changed into another prime (2491622359573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245811179789 + 1245811179790.

It is an arithmetic number, because the mean of its divisors is an integer number (1245811179790).

Almost surely, 2^{2491622359579} is an apocalyptic number.

2491622359579 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491622359579 is an equidigital number, since it uses as much as digits as its factorization.

2491622359579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73483200, while the sum is 64.

The spelling of 2491622359579 in words is "two trillion, four hundred ninety-one billion, six hundred twenty-two million, three hundred fifty-nine thousand, five hundred seventy-nine".