32606661138640 has 20 divisors (see below), whose sum is σ = 75810487147524. Its totient is φ = 13042664455424.

The previous prime is 32606661138631. The next prime is 32606661138671. The reversal of 32606661138640 is 4683116660623.

32606661138640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 19981686727744 + 12624974410896 = 4470088^2 + 3553164^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×32606661138640² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203791632037 + ... + 203791632196.

Almost surely, 2^{32606661138640} is an apocalyptic number.

It is an amenable number.

32606661138640 is an abundant number, since it is smaller than the sum of its proper divisors (43203826008884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32606661138640 is a wasteful number, since it uses less digits than its factorization.

32606661138640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407583264246 (or 407583264240 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 32606661138640 in words is "thirty-two trillion, six hundred six billion, six hundred sixty-one million, one hundred thirty-eight thousand, six hundred forty".