66105516615060 has 96 divisors (see below), whose sum is σ = 199395682375680. Its totient is φ = 16267055772672.

The previous prime is 66105516615031. The next prime is 66105516615097. The reversal of 66105516615060 is 6051661550166.

It is a congruent number.

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, 10702132 + ... + 15708171.

It is an arithmetic number, because the mean of its divisors is an integer number (2077038358080).

Almost surely, 2^{66105516615060} is an apocalyptic number.

66105516615060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66105516615060 is an abundant number, since it is smaller than the sum of its proper divisors (133290165760620).

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

66105516615060 is a wasteful number, since it uses less digits than its factorization.

66105516615060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26413537 (or 26413535 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 66105516615060 in words is "sixty-six trillion, one hundred five billion, five hundred sixteen million, six hundred fifteen thousand, sixty".