2181143247362 has 16 divisors (see below), whose sum is σ = 3277339299000. Its totient is φ = 1088697724800.

The previous prime is 2181143247341. The next prime is 2181143247391. The reversal of 2181143247362 is 2637423411812.

It can be written as a sum of positive squares in 4 ways, for example, as 923446043521 + 1257697203841 = 960961^2 + 1121471^2 .

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, 4609964 + ... + 5061032.

Almost surely, 2^{2181143247362} is an apocalyptic number.

2181143247362 is a deficient number, since it is larger than the sum of its proper divisors (1096196051638).

2181143247362 is a wasteful number, since it uses less digits than its factorization.

2181143247362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455221.

The product of its digits is 387072, while the sum is 44.

The spelling of 2181143247362 in words is "two trillion, one hundred eighty-one billion, one hundred forty-three million, two hundred forty-seven thousand, three hundred sixty-two".