2206165144378 has 16 divisors (see below), whose sum is σ = 3563836433640. Its totient is φ = 1018221152256.

The previous prime is 2206165144363. The next prime is 2206165144397. The reversal of 2206165144378 is 8734415616022.

It can be written as a sum of positive squares in 4 ways, for example, as 1136341076049 + 1069824068329 = 1065993^2 + 1034323^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3364458 + ... + 3966346.

Almost surely, 2^{2206165144378} is an apocalyptic number.

2206165144378 is a deficient number, since it is larger than the sum of its proper divisors (1357671289262).

2206165144378 is a wasteful number, since it uses less digits than its factorization.

2206165144378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742881.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 2206165144378 in words is "two trillion, two hundred six billion, one hundred sixty-five million, one hundred forty-four thousand, three hundred seventy-eight".