13545505533 has 32 divisors (see below), whose sum is σ = 20806502400. Its totient is φ = 7678376640.

The previous prime is 13545505481. The next prime is 13545505549. The reversal of 13545505533 is 33550554531.

It is not a de Polignac number, because 13545505533 - 2⁶ = 13545505469 is a prime.

It is a super-2 number, since 2×13545505533² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13545505491 and 13545505500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13545505133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1445443 + ... + 1454783.

It is an arithmetic number, because the mean of its divisors is an integer number (650203200).

Almost surely, 2^13545505533 is an apocalyptic number.

It is an amenable number.

13545505533 is a deficient number, since it is larger than the sum of its proper divisors (7260996867).

13545505533 is a wasteful number, since it uses less digits than its factorization.

13545505533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9897.

The product of its (nonzero) digits is 337500, while the sum is 39.

The spelling of 13545505533 in words is "thirteen billion, five hundred forty-five million, five hundred five thousand, five hundred thirty-three".