2136412250665 has 64 divisors (see below), whose sum is σ = 3473054023680. Its totient is φ = 1220995296000.

The previous prime is 2136412250597. The next prime is 2136412250669. The reversal of 2136412250665 is 5660522146312.

It is not a de Polignac number, because 2136412250665 - 2⁹ = 2136412250153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2136412250669) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4483866 + ... + 4937395.

It is an arithmetic number, because the mean of its divisors is an integer number (54266469120).

Almost surely, 2^{2136412250665} is an apocalyptic number.

It is an amenable number.

2136412250665 is a deficient number, since it is larger than the sum of its proper divisors (1336641773015).

2136412250665 is a wasteful number, since it uses less digits than its factorization.

2136412250665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9421334.

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 2136412250665 its reverse (5660522146312), we get a palindrome (7796934396977).

The spelling of 2136412250665 in words is "two trillion, one hundred thirty-six billion, four hundred twelve million, two hundred fifty thousand, six hundred sixty-five".