2188086156745 has 4 divisors (see below), whose sum is σ = 2625703388100. Its totient is φ = 1750468925392.

The previous prime is 2188086156733. The next prime is 2188086156761. The reversal of 2188086156745 is 5476516808812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 488058726544 + 1700027430201 = 698612^2 + 1303851^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188086156745 - 2¹⁹ = 2188085632457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218808615670 + ... + 218808615679.

It is an arithmetic number, because the mean of its divisors is an integer number (656425847025).

Almost surely, 2^{2188086156745} is an apocalyptic number.

It is an amenable number.

2188086156745 is a deficient number, since it is larger than the sum of its proper divisors (437617231355).

2188086156745 is an equidigital number, since it uses as much as digits as its factorization.

2188086156745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437617231354.

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 2188086156745 in words is "two trillion, one hundred eighty-eight billion, eighty-six million, one hundred fifty-six thousand, seven hundred forty-five".