20161448633 has 2 divisors, whose sum is σ = 20161448634. Its totient is φ = 20161448632.

The previous prime is 20161448591. The next prime is 20161448687. The reversal of 20161448633 is 33684416102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18646448704 + 1514999929 = 136552^2 + 38923^2 .

It is a cyclic number.

It is not a de Polignac number, because 20161448633 - 2²² = 20157254329 is a prime.

It is not a weakly prime, because it can be changed into another prime (20161448833) 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, 10080724316 + 10080724317.

It is an arithmetic number, because the mean of its divisors is an integer number (10080724317).

Almost surely, 2^20161448633 is an apocalyptic number.

It is an amenable number.

20161448633 is a deficient number, since it is larger than the sum of its proper divisors (1).

20161448633 is an equidigital number, since it uses as much as digits as its factorization.

20161448633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 20161448633 in words is "twenty billion, one hundred sixty-one million, four hundred forty-eight thousand, six hundred thirty-three".