6600145542640 has 80 divisors (see below), whose sum is σ = 17244259921728. Its totient is φ = 2331021293568.

The previous prime is 6600145542623. The next prime is 6600145542659. The reversal of 6600145542640 is 462455410066.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137938989 + ... + 137986828.

Almost surely, 2^{6600145542640} is an apocalyptic number.

It is an amenable number.

6600145542640 is an abundant number, since it is smaller than the sum of its proper divisors (10644114379088).

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

6600145542640 is a wasteful number, since it uses less digits than its factorization.

6600145542640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275925866 (or 275925860 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 6600145542640 in words is "six trillion, six hundred billion, one hundred forty-five million, five hundred forty-two thousand, six hundred forty".