13555020535 has 8 divisors (see below), whose sum is σ = 18589742496. Its totient is φ = 9294871200.

The previous prime is 13555020497. The next prime is 13555020541. The reversal of 13555020535 is 53502055531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13555020535 - 2²³ = 13546631927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13555020535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193643116 + ... + 193643185.

It is an arithmetic number, because the mean of its divisors is an integer number (2323717812).

Almost surely, 2^13555020535 is an apocalyptic number.

13555020535 is a deficient number, since it is larger than the sum of its proper divisors (5034721961).

13555020535 is an equidigital number, since it uses as much as digits as its factorization.

13555020535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387286313.

The product of its (nonzero) digits is 56250, while the sum is 34.

The spelling of 13555020535 in words is "thirteen billion, five hundred fifty-five million, twenty thousand, five hundred thirty-five".