13553750665 has 32 divisors (see below), whose sum is σ = 20041781760. Its totient is φ = 8568820224.

The previous prime is 13553750647. The next prime is 13553750699. The reversal of 13553750665 is 56605735531.

It is a cyclic number.

It is not a de Polignac number, because 13553750665 - 2⁹ = 13553750153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372556 + ... + 407314.

It is an arithmetic number, because the mean of its divisors is an integer number (626305680).

Almost surely, 2^13553750665 is an apocalyptic number.

It is an amenable number.

13553750665 is a deficient number, since it is larger than the sum of its proper divisors (6488031095).

13553750665 is a wasteful number, since it uses less digits than its factorization.

13553750665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35641.

The product of its (nonzero) digits is 1417500, while the sum is 46.

The spelling of 13553750665 in words is "thirteen billion, five hundred fifty-three million, seven hundred fifty thousand, six hundred sixty-five".