20610006544 has 20 divisors (see below), whose sum is σ = 40685321196. Its totient is φ = 10110568832.

The previous prime is 20610006509. The next prime is 20610006563. The reversal of 20610006544 is 44560001602.

It can be written as a sum of positive squares in 2 ways, for example, as 7382246400 + 13227760144 = 85920^2 + 115012^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12151279 + ... + 12152974.

Almost surely, 2^20610006544 is an apocalyptic number.

It is an amenable number.

20610006544 is a deficient number, since it is larger than the sum of its proper divisors (20075314652).

20610006544 is a wasteful number, since it uses less digits than its factorization.

20610006544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24304314 (or 24304308 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 20610006544 in words is "twenty billion, six hundred ten million, six thousand, five hundred forty-four".