2145109502166 has 16 divisors (see below), whose sum is σ = 4516020004800. Its totient is φ = 677403000648.

The previous prime is 2145109502153. The next prime is 2145109502209. The reversal of 2145109502166 is 6612059015412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9408374896 + ... + 9408375123.

It is an arithmetic number, because the mean of its divisors is an integer number (282251250300).

Almost surely, 2^{2145109502166} is an apocalyptic number.

2145109502166 is an abundant number, since it is smaller than the sum of its proper divisors (2370910502634).

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

2145109502166 is a wasteful number, since it uses less digits than its factorization.

2145109502166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18816750043.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 2145109502166 in words is "two trillion, one hundred forty-five billion, one hundred nine million, five hundred two thousand, one hundred sixty-six".