13505554143 has 16 divisors (see below), whose sum is σ = 20282316640. Its totient is φ = 8880363072.

The previous prime is 13505554133. The next prime is 13505554177. The reversal of 13505554143 is 34145550531.

13505554143 is a `hidden beast` number, since 1 + 3 + 505 + 5 + 5 + 4 + 143 = 666.

It is not a de Polignac number, because 13505554143 - 2²⁴ = 13488776927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13505554098 and 13505554107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13505554133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3424096 + ... + 3428037.

It is an arithmetic number, because the mean of its divisors is an integer number (1267644790).

Almost surely, 2^13505554143 is an apocalyptic number.

13505554143 is a deficient number, since it is larger than the sum of its proper divisors (6776762497).

13505554143 is an equidigital number, since it uses as much as digits as its factorization.

13505554143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852215 (or 6852209 counting only the distinct ones).

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

The spelling of 13505554143 in words is "thirteen billion, five hundred five million, five hundred fifty-four thousand, one hundred forty-three".