1664050540363 has 4 divisors (see below), whose sum is σ = 1679602414680. Its totient is φ = 1648498666048.

The previous prime is 1664050540349. The next prime is 1664050540379. The reversal of 1664050540363 is 3630450504661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1664050540363 - 2¹³ = 1664050532171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1664050540463) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7775936998 + ... + 7775937211.

It is an arithmetic number, because the mean of its divisors is an integer number (419900603670).

Almost surely, 2^{1664050540363} is an apocalyptic number.

1664050540363 is a deficient number, since it is larger than the sum of its proper divisors (15551874317).

1664050540363 is a wasteful number, since it uses less digits than its factorization.

1664050540363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551874316.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 1664050540363 in words is "one trillion, six hundred sixty-four billion, fifty million, five hundred forty thousand, three hundred sixty-three".