13505511323020 has 48 divisors (see below), whose sum is σ = 28476584379936. Its totient is φ = 5380300800000.

The previous prime is 13505511322937. The next prime is 13505511323021. The reversal of 13505511323020 is 2032311550531.

13505511323020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13505511323021) 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, 77024650 + ... + 77199790.

It is an arithmetic number, because the mean of its divisors is an integer number (593262174582).

Almost surely, 2^{13505511323020} is an apocalyptic number.

13505511323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13505511323020 is an abundant number, since it is smaller than the sum of its proper divisors (14971073056916).

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

13505511323020 is a wasteful number, since it uses less digits than its factorization.

13505511323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190762 (or 190760 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 13505511323020 its reverse (2032311550531), we get a palindrome (15537822873551).

The spelling of 13505511323020 in words is "thirteen trillion, five hundred five billion, five hundred eleven million, three hundred twenty-three thousand, twenty".