13720120554 has 128 divisors (see below), whose sum is σ = 32845824000. Its totient is φ = 3738551040.

The previous prime is 13720120537. The next prime is 13720120559. The reversal of 13720120554 is 45502102731.

13720120554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13720120559) 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 63 ways as a sum of consecutive naturals, for example, 38217427 + ... + 38217785.

It is an arithmetic number, because the mean of its divisors is an integer number (256608000).

Almost surely, 2^13720120554 is an apocalyptic number.

13720120554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13720120554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16422912000).

13720120554 is an abundant number, since it is smaller than the sum of its proper divisors (19125703446).

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

13720120554 is a wasteful number, since it uses less digits than its factorization.

13720120554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 13720120554 in words is "thirteen billion, seven hundred twenty million, one hundred twenty thousand, five hundred fifty-four".