3632520021 has 16 divisors (see below), whose sum is σ = 5250940800. Its totient is φ = 2220390720.

The previous prime is 3632519993. The next prime is 3632520053. The reversal of 3632520021 is 1200252363.

It is not a de Polignac number, because 3632520021 - 2¹⁰ = 3632518997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3632519973 and 3632520000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3632520721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306745 + ... + 318366.

It is an arithmetic number, because the mean of its divisors is an integer number (328183800).

Almost surely, 2^3632520021 is an apocalyptic number.

It is an amenable number.

3632520021 is a deficient number, since it is larger than the sum of its proper divisors (1618420779).

3632520021 is a wasteful number, since it uses less digits than its factorization.

3632520021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625276.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 3632520021 is about 60270.3909146108. The cubic root of 3632520021 is about 1537.2199268284.

Adding to 3632520021 its reverse (1200252363), we get a palindrome (4832772384).

The spelling of 3632520021 in words is "three billion, six hundred thirty-two million, five hundred twenty thousand, twenty-one".