4639559001997 has 2 divisors, whose sum is σ = 4639559001998. Its totient is φ = 4639559001996.

The previous prime is 4639559001911. The next prime is 4639559002009. The reversal of 4639559001997 is 7991009559364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2601143193636 + 2038415808361 = 1612806^2 + 1427731^2 .

It is a cyclic number.

It is not a de Polignac number, because 4639559001997 - 2¹⁵ = 4639558969229 is a prime.

It is a super-2 number, since 2×4639559001997² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4639559002997) 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, 2319779500998 + 2319779500999.

It is an arithmetic number, because the mean of its divisors is an integer number (2319779500999).

Almost surely, 2^{4639559001997} is an apocalyptic number.

It is an amenable number.

4639559001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4639559001997 is an equidigital number, since it uses as much as digits as its factorization.

4639559001997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82668600, while the sum is 67.

The spelling of 4639559001997 in words is "four trillion, six hundred thirty-nine billion, five hundred fifty-nine million, one thousand, nine hundred ninety-seven".