20183347101649 has 2 divisors, whose sum is σ = 20183347101650. Its totient is φ = 20183347101648.

The previous prime is 20183347101629. The next prime is 20183347101721. The reversal of 20183347101649 is 94610174338102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15295975754049 + 4887371347600 = 3911007^2 + 2210740^2 .

It is a cyclic number.

It is not a de Polignac number, because 20183347101649 - 2¹⁵ = 20183347068881 is a prime.

It is not a weakly prime, because it can be changed into another prime (20183347101629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10091673550824 + 10091673550825.

It is an arithmetic number, because the mean of its divisors is an integer number (10091673550825).

Almost surely, 2^{20183347101649} is an apocalyptic number.

It is an amenable number.

20183347101649 is a deficient number, since it is larger than the sum of its proper divisors (1).

20183347101649 is an equidigital number, since it uses as much as digits as its factorization.

20183347101649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 20183347101649 in words is "twenty trillion, one hundred eighty-three billion, three hundred forty-seven million, one hundred one thousand, six hundred forty-nine".