11512145454 has 16 divisors (see below), whose sum is σ = 23025526992. Its totient is φ = 3837175808.

The previous prime is 11512145387. The next prime is 11512145471. The reversal of 11512145454 is 45454121511.

11512145454 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11512145454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 107182 + ... + 185774.

It is an arithmetic number, because the mean of its divisors is an integer number (1439095437).

Almost surely, 2^11512145454 is an apocalyptic number.

11512145454 is an abundant number, since it is smaller than the sum of its proper divisors (11513381538).

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

11512145454 is a wasteful number, since it uses less digits than its factorization.

11512145454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103011.

The product of its digits is 16000, while the sum is 33.

Adding to 11512145454 its reverse (45454121511), we get a palindrome (56966266965).

The spelling of 11512145454 in words is "eleven billion, five hundred twelve million, one hundred forty-five thousand, four hundred fifty-four".