19580049971 has 2 divisors, whose sum is σ = 19580049972. Its totient is φ = 19580049970.

The previous prime is 19580049961. The next prime is 19580050013. The reversal of 19580049971 is 17994008591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19580049971 - 2¹⁴ = 19580033587 is a prime.

It is not a weakly prime, because it can be changed into another prime (19580049901) 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, 9790024985 + 9790024986.

It is an arithmetic number, because the mean of its divisors is an integer number (9790024986).

Almost surely, 2^19580049971 is an apocalyptic number.

19580049971 is a deficient number, since it is larger than the sum of its proper divisors (1).

19580049971 is an equidigital number, since it uses as much as digits as its factorization.

19580049971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 19580049971 in words is "nineteen billion, five hundred eighty million, forty-nine thousand, nine hundred seventy-one".