11553534045 has 24 divisors (see below), whose sum is σ = 20039175000. Its totient is φ = 6157869696.

The previous prime is 11553534023. The next prime is 11553534089. The reversal of 11553534045 is 54043535511.

11553534045 is a `hidden beast` number, since 11 + 553 + 53 + 4 + 0 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3765295044 + 7788239001 = 61362^2 + 88251^2 .

It is not a de Polignac number, because 11553534045 - 2¹⁰ = 11553533021 is a prime.

It is a super-3 number, since 3×11553534045³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13170 + ... + 152579.

It is an arithmetic number, because the mean of its divisors is an integer number (834965625).

Almost surely, 2^11553534045 is an apocalyptic number.

11553534045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11553534045 is a deficient number, since it is larger than the sum of its proper divisors (8485640955).

11553534045 is a wasteful number, since it uses less digits than its factorization.

11553534045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167309 (or 167306 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 11553534045 in words is "eleven billion, five hundred fifty-three million, five hundred thirty-four thousand, forty-five".