13535610020 has 24 divisors (see below), whose sum is σ = 28427965944. Its totient is φ = 5413637376.

The previous prime is 13535609999. The next prime is 13535610061. The reversal of 13535610020 is 2001653531.

It can be written as a sum of positive squares in 4 ways, for example, as 2467307584 + 11068302436 = 49672^2 + 105206^2 .

It is a super-2 number, since 2×13535610020² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173912 + ... + 239408.

It is an arithmetic number, because the mean of its divisors is an integer number (1184498581).

Almost surely, 2^13535610020 is an apocalyptic number.

13535610020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13535610020 is an abundant number, since it is smaller than the sum of its proper divisors (14892355924).

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

13535610020 is a wasteful number, since it uses less digits than its factorization.

13535610020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75839 (or 75837 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 13535610020 in words is "thirteen billion, five hundred thirty-five million, six hundred ten thousand, twenty".