2170115155445 has 8 divisors (see below), whose sum is σ = 2606321042136. Its totient is φ = 1734636887296.

The previous prime is 2170115155423. The next prime is 2170115155447. The reversal of 2170115155445 is 5445515110712.

It can be written as a sum of positive squares in 4 ways, for example, as 537385760356 + 1632729395089 = 733066^2 + 1277783^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2170115155445 - 2¹⁴ = 2170115139061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170115155447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181898072 + ... + 181910001.

It is an arithmetic number, because the mean of its divisors is an integer number (325790130267).

Almost surely, 2^{2170115155445} is an apocalyptic number.

It is an amenable number.

2170115155445 is a deficient number, since it is larger than the sum of its proper divisors (436205886691).

2170115155445 is a wasteful number, since it uses less digits than its factorization.

2170115155445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363809271.

The product of its (nonzero) digits is 140000, while the sum is 41.

The spelling of 2170115155445 in words is "two trillion, one hundred seventy billion, one hundred fifteen million, one hundred fifty-five thousand, four hundred forty-five".