13235059640 has 128 divisors (see below), whose sum is σ = 34450557120. Its totient is φ = 4522598400.

The previous prime is 13235059639. The next prime is 13235059681. The reversal of 13235059640 is 4695053231.

It is a junction number, because it is equal to n+sod(n) for n = 13235059594 and 13235059603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7636214 + ... + 7637946.

Almost surely, 2^13235059640 is an apocalyptic number.

13235059640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13235059640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17225278560).

13235059640 is an abundant number, since it is smaller than the sum of its proper divisors (21215497480).

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

13235059640 is a wasteful number, since it uses less digits than its factorization.

13235059640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 13235059640 in words is "thirteen billion, two hundred thirty-five million, fifty-nine thousand, six hundred forty".