6600617858540 has 96 divisors (see below), whose sum is σ = 14121790397568. Its totient is φ = 2590841088000.

The previous prime is 6600617858539. The next prime is 6600617858579. The reversal of 6600617858540 is 458587160066.

It is a super-2 number, since 2×6600617858540² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1218497912 + ... + 1218503328.

It is an arithmetic number, because the mean of its divisors is an integer number (147101983308).

Almost surely, 2^{6600617858540} is an apocalyptic number.

It is an amenable number.

6600617858540 is an abundant number, since it is smaller than the sum of its proper divisors (7521172539028).

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

6600617858540 is a wasteful number, since it uses less digits than its factorization.

6600617858540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659 (or 7657 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 6600617858540 in words is "six trillion, six hundred billion, six hundred seventeen million, eight hundred fifty-eight thousand, five hundred forty".