2101355636 has 6 divisors (see below), whose sum is σ = 3677372370. Its totient is φ = 1050677816.

The previous prime is 2101355621. The next prime is 2101355671. The reversal of 2101355636 is 6365531012.

It can be written as a sum of positive squares in only one way, i.e., 1156408036 + 944947600 = 34006^2 + 30740^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262669451 + ... + 262669458.

It is an arithmetic number, because the mean of its divisors is an integer number (612895395).

Almost surely, 2^2101355636 is an apocalyptic number.

It is an amenable number.

2101355636 is a deficient number, since it is larger than the sum of its proper divisors (1576016734).

2101355636 is a wasteful number, since it uses less digits than its factorization.

2101355636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525338913 (or 525338911 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 2101355636 is about 45840.5457646394. The cubic root of 2101355636 is about 1280.8546611459.

Adding to 2101355636 its reverse (6365531012), we get a palindrome (8466886648).

The spelling of 2101355636 in words is "two billion, one hundred one million, three hundred fifty-five thousand, six hundred thirty-six".