1161603103144 has 32 divisors (see below), whose sum is σ = 2381650143840. Its totient is φ = 526747233600.

The previous prime is 1161603103139. The next prime is 1161603103153. The reversal of 1161603103144 is 4413013061611.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15639954 + ... + 15714049.

It is an arithmetic number, because the mean of its divisors is an integer number (74426566995).

Almost surely, 2^{1161603103144} is an apocalyptic number.

It is an amenable number.

1161603103144 is an abundant number, since it is smaller than the sum of its proper divisors (1220047040696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161603103144 is a wasteful number, since it uses less digits than its factorization.

1161603103144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31354441 (or 31354437 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 1161603103144 its reverse (4413013061611), we get a palindrome (5574616164755).

The spelling of 1161603103144 in words is "one trillion, one hundred sixty-one billion, six hundred three million, one hundred three thousand, one hundred forty-four".