11512145455 has 16 divisors (see below), whose sum is σ = 14127260544. Its totient is φ = 9001780480.

The previous prime is 11512145387. The next prime is 11512145471. The reversal of 11512145455 is 55454121511.

It is not a de Polignac number, because 11512145455 - 2⁷ = 11512145327 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 11512145455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146649 + ... + 211021.

It is an arithmetic number, because the mean of its divisors is an integer number (882953784).

Almost surely, 2^11512145455 is an apocalyptic number.

11512145455 is a deficient number, since it is larger than the sum of its proper divisors (2615115089).

11512145455 is an equidigital number, since it uses as much as digits as its factorization.

11512145455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65186.

The product of its digits is 20000, while the sum is 34.

Adding to 11512145455 its reverse (55454121511), we get a palindrome (66966266966).

The spelling of 11512145455 in words is "eleven billion, five hundred twelve million, one hundred forty-five thousand, four hundred fifty-five".