13535120020 has 24 divisors (see below), whose sum is σ = 28426182624. Its totient is φ = 5413585056.

The previous prime is 13535119981. The next prime is 13535120023. The reversal of 13535120020 is 2002153531.

It is a junction number, because it is equal to n+sod(n) for n = 13535119973 and 13535120000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13535120023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304539 + ... + 346141.

It is an arithmetic number, because the mean of its divisors is an integer number (1184424276).

Almost surely, 2^13535120020 is an apocalyptic number.

13535120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13535120020 is an abundant number, since it is smaller than the sum of its proper divisors (14891062604).

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

13535120020 is a wasteful number, since it uses less digits than its factorization.

13535120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57879 (or 57877 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 13535120020 its reverse (2002153531), we get a palindrome (15537273551).

The spelling of 13535120020 in words is "thirteen billion, five hundred thirty-five million, one hundred twenty thousand, twenty".