13083505640 has 64 divisors (see below), whose sum is σ = 31018680000. Its totient is φ = 4952931840.

The previous prime is 13083505637. The next prime is 13083505649. The reversal of 13083505640 is 4650538031.

It is a self number, because there is not a number n which added to its sum of digits gives 13083505640.

It is not an unprimeable number, because it can be changed into a prime (13083505649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789035 + ... + 805445.

It is an arithmetic number, because the mean of its divisors is an integer number (484666875).

Almost surely, 2^13083505640 is an apocalyptic number.

13083505640 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 13083505640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15509340000).

13083505640 is an abundant number, since it is smaller than the sum of its proper divisors (17935174360).

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

13083505640 is a wasteful number, since it uses less digits than its factorization.

13083505640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17490 (or 17486 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 13083505640 in words is "thirteen billion, eighty-three million, five hundred five thousand, six hundred forty".