2145522166336 has 28 divisors (see below), whose sum is σ = 4261740221740. Its totient is φ = 1071697858560.

The previous prime is 2145522166259. The next prime is 2145522166409. The reversal of 2145522166336 is 6336612255412.

It can be written as a sum of positive squares in 2 ways, for example, as 1333101160000 + 812421006336 = 1154600^2 + 901344^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16547805 + ... + 16676956.

Almost surely, 2^{2145522166336} is an apocalyptic number.

It is an amenable number.

2145522166336 is a deficient number, since it is larger than the sum of its proper divisors (2116218055404).

2145522166336 is a wasteful number, since it uses less digits than its factorization.

2145522166336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33225782 (or 33225772 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 46.

It can be divided in two parts, 21455 and 22166336, that added together give a triangular number (22187791 = T₆₆₆₁).

The spelling of 2145522166336 in words is "two trillion, one hundred forty-five billion, five hundred twenty-two million, one hundred sixty-six thousand, three hundred thirty-six".