15161360641440 has 384 divisors, whose sum is σ = 53846601258240. Its totient is φ = 3559919419392.

The previous prime is 15161360641423. The next prime is 15161360641463. The reversal of 15161360641440 is 4414606316151.

It is a junction number, because it is equal to n+sod(n) for n = 15161360641392 and 15161360641401.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14514964 + ... + 15524396.

It is an arithmetic number, because the mean of its divisors is an integer number (140225524110).

Almost surely, 2^{15161360641440} is an apocalyptic number.

15161360641440 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 15161360641440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26923300629120).

15161360641440 is an abundant number, since it is smaller than the sum of its proper divisors (38685240616800).

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

15161360641440 is a wasteful number, since it uses less digits than its factorization.

15161360641440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009576 (or 1009568 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

Adding to 15161360641440 its reverse (4414606316151), we get a palindrome (19575966957591).

The spelling of 15161360641440 in words is "fifteen trillion, one hundred sixty-one billion, three hundred sixty million, six hundred forty-one thousand, four hundred forty".