11545161534 has 12 divisors (see below), whose sum is σ = 25014516696. Its totient is φ = 3848387172.

The previous prime is 11545161521. The next prime is 11545161571. The reversal of 11545161534 is 43516154511.

11545161534 is a `hidden beast` number, since 1 + 1 + 5 + 4 + 5 + 1 + 615 + 34 = 666.

11545161534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320698914 + ... + 320698949.

It is an arithmetic number, because the mean of its divisors is an integer number (2084543058).

Almost surely, 2^11545161534 is an apocalyptic number.

11545161534 is an abundant number, since it is smaller than the sum of its proper divisors (13469355162).

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

11545161534 is a wasteful number, since it uses less digits than its factorization.

11545161534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641397871 (or 641397868 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

It can be divided in two parts, 11 and 545161534, that added together give a palindrome (545161545).

The spelling of 11545161534 in words is "eleven billion, five hundred forty-five million, one hundred sixty-one thousand, five hundred thirty-four".