11603403655 has 16 divisors (see below), whose sum is σ = 14120947584. Its totient is φ = 9151591680.

The previous prime is 11603403631. The next prime is 11603403677. The reversal of 11603403655 is 55630430611.

It is not a de Polignac number, because 11603403655 - 2⁹ = 11603403143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11603403655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062925 + ... + 1073785.

It is an arithmetic number, because the mean of its divisors is an integer number (882559224).

Almost surely, 2^11603403655 is an apocalyptic number.

11603403655 is a deficient number, since it is larger than the sum of its proper divisors (2517543929).

11603403655 is a wasteful number, since it uses less digits than its factorization.

11603403655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 11603403655 in words is "eleven billion, six hundred three million, four hundred three thousand, six hundred fifty-five".