11603240145 has 96 divisors (see below), whose sum is σ = 24231916800. Its totient is φ = 5160402432.

The previous prime is 11603240113. The next prime is 11603240147. The reversal of 11603240145 is 54104230611.

It is a happy number.

11603240145 is a `hidden beast` number, since 1 + 1 + 603 + 2 + 40 + 14 + 5 = 666.

It is not a de Polignac number, because 11603240145 - 2⁵ = 11603240113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11603240147) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1289221 + ... + 1298189.

It is an arithmetic number, because the mean of its divisors is an integer number (252415800).

Almost surely, 2^11603240145 is an apocalyptic number.

11603240145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11603240145 is an abundant number, since it is smaller than the sum of its proper divisors (12628676655).

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

11603240145 is an equidigital number, since it uses as much as digits as its factorization.

11603240145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064 (or 9021 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 11603240145 its reverse (54104230611), we get a palindrome (65707470756).

The spelling of 11603240145 in words is "eleven billion, six hundred three million, two hundred forty thousand, one hundred forty-five".