13535449820 has 48 divisors (see below), whose sum is σ = 28974583008. Its totient is φ = 5309909760.

The previous prime is 13535449819. The next prime is 13535449831. The reversal of 13535449820 is 2894453531.

13535449820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407354 + ... + 439326.

It is an arithmetic number, because the mean of its divisors is an integer number (603637146).

Almost surely, 2^13535449820 is an apocalyptic number.

13535449820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13535449820 is an abundant number, since it is smaller than the sum of its proper divisors (15439133188).

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

13535449820 is a wasteful number, since it uses less digits than its factorization.

13535449820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32390 (or 32388 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 13535449820 in words is "thirteen billion, five hundred thirty-five million, four hundred forty-nine thousand, eight hundred twenty".