11145421575 has 72 divisors (see below), whose sum is σ = 20241561600. Its totient is φ = 5861782080.

The previous prime is 11145421559. The next prime is 11145421601. The reversal of 11145421575 is 57512454111.

11145421575 is a `hidden beast` number, since 1 + 1 + 1 + 45 + 42 + 1 + 575 = 666.

It is not a de Polignac number, because 11145421575 - 2⁴ = 11145421559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5113836 + ... + 5116014.

It is an arithmetic number, because the mean of its divisors is an integer number (281132800).

Almost surely, 2^11145421575 is an apocalyptic number.

11145421575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11145421575 is a deficient number, since it is larger than the sum of its proper divisors (9096140025).

11145421575 is a wasteful number, since it uses less digits than its factorization.

11145421575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2493 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

Adding to 11145421575 its reverse (57512454111), we get a palindrome (68657875686).

The spelling of 11145421575 in words is "eleven billion, one hundred forty-five million, four hundred twenty-one thousand, five hundred seventy-five".