13405534005501 has 96 divisors (see below), whose sum is σ = 24203312759808. Its totient is φ = 7314186781440.

The previous prime is 13405534005491. The next prime is 13405534005527. The reversal of 13405534005501 is 10550043550431.

13405534005501 is a `hidden beast` number, since 13 + 4 + 0 + 5 + 53 + 40 + 0 + 550 + 1 = 666.

13405534005501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13405534005501 - 2⁷ = 13405534005373 is a prime.

It is a super-2 number, since 2×13405534005501² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405534005581) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5368111 + ... + 7458396.

It is an arithmetic number, because the mean of its divisors is an integer number (252117841248).

Almost surely, 2^{13405534005501} is an apocalyptic number.

13405534005501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13405534005501 is a deficient number, since it is larger than the sum of its proper divisors (10797778754307).

13405534005501 is a wasteful number, since it uses less digits than its factorization.

13405534005501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12826573 (or 12826561 counting only the distinct ones).

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

Adding to 13405534005501 its reverse (10550043550431), we get a palindrome (23955577555932).

The spelling of 13405534005501 in words is "thirteen trillion, four hundred five billion, five hundred thirty-four million, five thousand, five hundred one".