13018396440 has 288 divisors, whose sum is σ = 47956348080. Its totient is φ = 2818561536.

The previous prime is 13018396439. The next prime is 13018396441. The reversal of 13018396440 is 4469381031.

It is an interprime number because it is at equal distance from previous prime (13018396439) and next prime (13018396441).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13018396441) 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 71 ways as a sum of consecutive naturals, for example, 2119614 + ... + 2125746.

Almost surely, 2^13018396440 is an apocalyptic number.

13018396440 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 13018396440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23978174040).

13018396440 is an abundant number, since it is smaller than the sum of its proper divisors (34937951640).

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

13018396440 is a wasteful number, since it uses less digits than its factorization.

13018396440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6199 (or 6169 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 13018396440 in words is "thirteen billion, eighteen million, three hundred ninety-six thousand, four hundred forty".