11145361603 has 4 divisors (see below), whose sum is σ = 11171835568. Its totient is φ = 11118887640.

The previous prime is 11145361559. The next prime is 11145361607. The reversal of 11145361603 is 30616354111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30616354111 = 7 ⋅4373764873.

It is a cyclic number.

It is not a de Polignac number, because 11145361603 - 2²⁵ = 11111807171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11145361607) 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, 13236351 + ... + 13237192.

It is an arithmetic number, because the mean of its divisors is an integer number (2792958892).

Almost surely, 2^11145361603 is an apocalyptic number.

11145361603 is a deficient number, since it is larger than the sum of its proper divisors (26473965).

11145361603 is an equidigital number, since it uses as much as digits as its factorization.

11145361603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26473964.

The product of its (nonzero) digits is 6480, while the sum is 31.

It can be divided in two parts, 111453 and 61603, that added together give a square (173056 = 416²).

The spelling of 11145361603 in words is "eleven billion, one hundred forty-five million, three hundred sixty-one thousand, six hundred three".