13912520440 has 128 divisors (see below), whose sum is σ = 38578176000. Its totient is φ = 4397234688.

The previous prime is 13912520417. The next prime is 13912520443. The reversal of 13912520440 is 4402521931.

13912520440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13912520443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3343081 + ... + 3347239.

It is an arithmetic number, because the mean of its divisors is an integer number (301392000).

Almost surely, 2^13912520440 is an apocalyptic number.

13912520440 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 13912520440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19289088000).

13912520440 is an abundant number, since it is smaller than the sum of its proper divisors (24665655560).

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

13912520440 is a wasteful number, since it uses less digits than its factorization.

13912520440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109 (or 5105 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 13912520440 in words is "thirteen billion, nine hundred twelve million, five hundred twenty thousand, four hundred forty".