166615061205 has 16 divisors (see below), whose sum is σ = 266599226880. Its totient is φ = 88856323008.

The previous prime is 166615061161. The next prime is 166615061233. The reversal of 166615061205 is 502160516661.

It is not a de Polignac number, because 166615061205 - 2¹³ = 166615053013 is a prime.

It is a Curzon number.

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, 33970 + ... + 578259.

It is an arithmetic number, because the mean of its divisors is an integer number (16662451680).

Almost surely, 2^166615061205 is an apocalyptic number.

166615061205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166615061205 is a deficient number, since it is larger than the sum of its proper divisors (99984165675).

166615061205 is a wasteful number, since it uses less digits than its factorization.

166615061205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630380.

The product of its (nonzero) digits is 64800, while the sum is 39.

Adding to 166615061205 its reverse (502160516661), we get a palindrome (668775577866).

The spelling of 166615061205 in words is "one hundred sixty-six billion, six hundred fifteen million, sixty-one thousand, two hundred five".