166515634046245 has 12 divisors (see below), whose sum is σ = 219635497470060. Its totient is φ = 121102279305920.

The previous prime is 166515634046147. The next prime is 166515634046299. The reversal of 166515634046245 is 542640436515661.

It can be written as a sum of positive squares in 2 ways, for example, as 61881413192676 + 104634220853569 = 7866474^2 + 10229087^2 .

It is a de Polignac number, because none of the positive numbers 2^k-166515634046245 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166515634046245.

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, 137616225880 + ... + 137616227089.

It is an arithmetic number, because the mean of its divisors is an integer number (18302958122505).

Almost surely, 2^{166515634046245} is an apocalyptic number.

It is an amenable number.

166515634046245 is a deficient number, since it is larger than the sum of its proper divisors (53119863423815).

166515634046245 is a wasteful number, since it uses less digits than its factorization.

166515634046245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275232452996 (or 275232452985 counting only the distinct ones).

The product of its (nonzero) digits is 62208000, while the sum is 58.

The spelling of 166515634046245 in words is "one hundred sixty-six trillion, five hundred fifteen billion, six hundred thirty-four million, forty-six thousand, two hundred forty-five".