213640842410 has 16 divisors (see below), whose sum is σ = 386546025096. Its totient is φ = 85013557248.

The previous prime is 213640842391. The next prime is 213640842427. The reversal of 213640842410 is 14248046312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 175478047801 + 38162794609 = 418901^2 + 195353^2 .

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, 55345439 + ... + 55349298.

Almost surely, 2^213640842410 is an apocalyptic number.

213640842410 is a deficient number, since it is larger than the sum of its proper divisors (172905182686).

213640842410 is a wasteful number, since it uses less digits than its factorization.

213640842410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110694937.

The product of its (nonzero) digits is 36864, while the sum is 35.

Adding to 213640842410 its reverse (14248046312), we get a palindrome (227888888722).

The spelling of 213640842410 in words is "two hundred thirteen billion, six hundred forty million, eight hundred forty-two thousand, four hundred ten".