2136404040244 has 12 divisors (see below), whose sum is σ = 3867628004100. Its totient is φ = 1031367467648.

The previous prime is 2136404040151. The next prime is 2136404040293. The reversal of 2136404040244 is 4420404046312.

It can be written as a sum of positive squares in 2 ways, for example, as 833751610000 + 1302652430244 = 913100^2 + 1141338^2 .

It is a congruent number.

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, 9208637989 + ... + 9208638220.

It is an arithmetic number, because the mean of its divisors is an integer number (322302333675).

Almost surely, 2^{2136404040244} is an apocalyptic number.

It is an amenable number.

2136404040244 is a deficient number, since it is larger than the sum of its proper divisors (1731223963856).

2136404040244 is a wasteful number, since it uses less digits than its factorization.

2136404040244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18417276242 (or 18417276240 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 2136404040244 its reverse (4420404046312), we get a palindrome (6556808086556).

The spelling of 2136404040244 in words is "two trillion, one hundred thirty-six billion, four hundred four million, forty thousand, two hundred forty-four".