15401241255140 has 144 divisors (see below), whose sum is σ = 36413478596880. Its totient is φ = 5462644561920.

The previous prime is 15401241255139. The next prime is 15401241255149. The reversal of 15401241255140 is 4155214210451.

It can be written as a sum of positive squares in 24 ways, for example, as 13868295168256 + 1532946086884 = 3724016^2 + 1238122^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15401241255140.

It is not an unprimeable number, because it can be changed into a prime (15401241255149) 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 47 ways as a sum of consecutive naturals, for example, 18911150 + ... + 19708730.

It is an arithmetic number, because the mean of its divisors is an integer number (252871379145).

Almost surely, 2^{15401241255140} is an apocalyptic number.

15401241255140 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 15401241255140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18206739298440).

15401241255140 is an abundant number, since it is smaller than the sum of its proper divisors (21012237341740).

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

15401241255140 is a wasteful number, since it uses less digits than its factorization.

15401241255140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797842 (or 797827 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 15401241255140 its reverse (4155214210451), we get a palindrome (19556455465591).

The spelling of 15401241255140 in words is "fifteen trillion, four hundred one billion, two hundred forty-one million, two hundred fifty-five thousand, one hundred forty".