1600664541403 has 4 divisors (see below), whose sum is σ = 1601870770720. Its totient is φ = 1599458312088.

The previous prime is 1600664541397. The next prime is 1600664541491. The reversal of 1600664541403 is 3041454660061.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1600664541403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1600664541103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603112668 + ... + 603115321.

It is an arithmetic number, because the mean of its divisors is an integer number (400467692680).

Almost surely, 2^{1600664541403} is an apocalyptic number.

1600664541403 is a deficient number, since it is larger than the sum of its proper divisors (1206229317).

1600664541403 is a wasteful number, since it uses less digits than its factorization.

1600664541403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206229316.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 1600664541403 in words is "one trillion, six hundred billion, six hundred sixty-four million, five hundred forty-one thousand, four hundred three".