11545273545 has 64 divisors (see below), whose sum is σ = 20785089024. Its totient is φ = 5429698560.

The previous prime is 11545273543. The next prime is 11545273567. The reversal of 11545273545 is 54537254511.

It is not a de Polignac number, because 11545273545 - 2¹ = 11545273543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11545273497 and 11545273506.

It is not an unprimeable number, because it can be changed into a prime (11545273541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5546905 + ... + 5548985.

It is an arithmetic number, because the mean of its divisors is an integer number (324767016).

Almost surely, 2^11545273545 is an apocalyptic number.

11545273545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11545273545 is a deficient number, since it is larger than the sum of its proper divisors (9239815479).

11545273545 is a wasteful number, since it uses less digits than its factorization.

11545273545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362.

The product of its digits is 420000, while the sum is 42.

It can be divided in two parts, 11 and 545273545, that multiplied together give a palindrome (5998008995).

The spelling of 11545273545 in words is "eleven billion, five hundred forty-five million, two hundred seventy-three thousand, five hundred forty-five".