66608840241560 has 48 divisors (see below), whose sum is σ = 150533023440960. Its totient is φ = 26526162870080.

The previous prime is 66608840241547. The next prime is 66608840241599. The reversal of 66608840241560 is 6514204880666.

It is a junction number, because it is equal to n+sod(n) for n = 66608840241496 and 66608840241505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14096936 + ... + 18219255.

It is an arithmetic number, because the mean of its divisors is an integer number (3136104655020).

Almost surely, 2^{66608840241560} is an apocalyptic number.

It is an amenable number.

66608840241560 is an abundant number, since it is smaller than the sum of its proper divisors (83924183199400).

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

66608840241560 is a wasteful number, since it uses less digits than its factorization.

66608840241560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32316656 (or 32316425 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 66608840241560 in words is "sixty-six trillion, six hundred eight billion, eight hundred forty million, two hundred forty-one thousand, five hundred sixty".