13535144020 has 24 divisors (see below), whose sum is σ = 28448124768. Its totient is φ = 5409424800.

The previous prime is 13535143933. The next prime is 13535144033. The reversal of 13535144020 is 2044153531.

It is a self number, because there is not a number n which added to its sum of digits gives 13535144020.

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, 265546 + ... + 312385.

It is an arithmetic number, because the mean of its divisors is an integer number (1185338532).

Almost surely, 2^13535144020 is an apocalyptic number.

13535144020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13535144020 is an abundant number, since it is smaller than the sum of its proper divisors (14912980748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13535144020 is a wasteful number, since it uses less digits than its factorization.

13535144020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579111 (or 579109 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 13535144020 its reverse (2044153531), we get a palindrome (15579297551).

The spelling of 13535144020 in words is "thirteen billion, five hundred thirty-five million, one hundred forty-four thousand, twenty".