1205611145166 has 32 divisors (see below), whose sum is σ = 2436300040608. Its totient is φ = 397691504640.

The previous prime is 1205611145153. The next prime is 1205611145209. The reversal of 1205611145166 is 6615411165021.

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, 6799276 + ... + 6974336.

It is an arithmetic number, because the mean of its divisors is an integer number (76134376269).

Almost surely, 2^{1205611145166} is an apocalyptic number.

1205611145166 is an abundant number, since it is smaller than the sum of its proper divisors (1230688895442).

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

1205611145166 is a wasteful number, since it uses less digits than its factorization.

1205611145166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186996.

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 1205611145166 in words is "one trillion, two hundred five billion, six hundred eleven million, one hundred forty-five thousand, one hundred sixty-six".