11601420075 has 288 divisors, whose sum is σ = 26869708800. Its totient is φ = 4874204160.

The previous prime is 11601420073. The next prime is 11601420097. The reversal of 11601420075 is 57002410611.

It is a happy number.

11601420075 is a `hidden beast` number, since 11 + 601 + 42 + 0 + 0 + 7 + 5 = 666.

It is not a de Polignac number, because 11601420075 - 2¹ = 11601420073 is a prime.

It is a super-2 number, since 2×11601420075² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (11601420071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 26426706 + ... + 26427144.

It is an arithmetic number, because the mean of its divisors is an integer number (93297600).

Almost surely, 2^11601420075 is an apocalyptic number.

11601420075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11601420075 is an abundant number, since it is smaller than the sum of its proper divisors (15268288725).

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

11601420075 is a wasteful number, since it uses less digits than its factorization.

11601420075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

Adding to 11601420075 its reverse (57002410611), we get a palindrome (68603830686).

The spelling of 11601420075 in words is "eleven billion, six hundred one million, four hundred twenty thousand, seventy-five".