20532264644 has 12 divisors (see below), whose sum is σ = 35933184000. Its totient is φ = 10265640648.

The previous prime is 20532264593. The next prime is 20532264653. The reversal of 20532264644 is 44646223502.

It is a super-2 number, since 2×20532264644² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20532264598 and 20532264607.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 19244 + ... + 203555.

It is an arithmetic number, because the mean of its divisors is an integer number (2994432000).

Almost surely, 2^20532264644 is an apocalyptic number.

It is an amenable number.

20532264644 is a deficient number, since it is larger than the sum of its proper divisors (15400919356).

20532264644 is a wasteful number, since it uses less digits than its factorization.

20532264644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245842 (or 245840 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

The spelling of 20532264644 in words is "twenty billion, five hundred thirty-two million, two hundred sixty-four thousand, six hundred forty-four".