20130113132440 has 16 divisors (see below), whose sum is σ = 45292754548080. Its totient is φ = 8052045252960.

The previous prime is 20130113132429. The next prime is 20130113132473. The reversal of 20130113132440 is 4423131103102.

20130113132440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251626414116 + ... + 251626414195.

It is an arithmetic number, because the mean of its divisors is an integer number (2830797159255).

Almost surely, 2^{20130113132440} is an apocalyptic number.

20130113132440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130113132440 is an abundant number, since it is smaller than the sum of its proper divisors (25162641415640).

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

20130113132440 is a wasteful number, since it uses less digits than its factorization.

20130113132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503252828322 (or 503252828318 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20130113132440 its reverse (4423131103102), we get a palindrome (24553244235542).

The spelling of 20130113132440 in words is "twenty trillion, one hundred thirty billion, one hundred thirteen million, one hundred thirty-two thousand, four hundred forty".