166605505510616 has 64 divisors (see below), whose sum is σ = 319821759784800. Its totient is φ = 81341211571200.

The previous prime is 166605505510547. The next prime is 166605505510627. The reversal of 166605505510616 is 616015505506661.

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, 48601151 + ... + 51916113.

Almost surely, 2^{166605505510616} is an apocalyptic number.

It is an amenable number.

166605505510616 is a deficient number, since it is larger than the sum of its proper divisors (153216254274184).

166605505510616 is a wasteful number, since it uses less digits than its factorization.

166605505510616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315780 (or 3315776 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 166605505510616 in words is "one hundred sixty-six trillion, six hundred five billion, five hundred five million, five hundred ten thousand, six hundred sixteen".