11557765603 has 2 divisors, whose sum is σ = 11557765604. Its totient is φ = 11557765602.

The previous prime is 11557765579. The next prime is 11557765657. The reversal of 11557765603 is 30656775511.

It is a weak prime.

It is an emirp because it is prime and its reverse (30656775511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11557765603 - 2¹⁷ = 11557634531 is a prime.

It is not a weakly prime, because it can be changed into another prime (11557765693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778882801 + 5778882802.

It is an arithmetic number, because the mean of its divisors is an integer number (5778882802).

Almost surely, 2^11557765603 is an apocalyptic number.

11557765603 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557765603 is an equidigital number, since it uses as much as digits as its factorization.

11557765603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 11557765603 in words is "eleven billion, five hundred fifty-seven million, seven hundred sixty-five thousand, six hundred three".