15223961280 has 448 divisors, whose sum is σ = 57936384000. Its totient is φ = 3343380480.

The previous prime is 15223961279. The next prime is 15223961293. The reversal of 15223961280 is 8216932251.

15223961280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 4613071 + ... + 4616369.

Almost surely, 2^15223961280 is an apocalyptic number.

15223961280 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 15223961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28968192000).

15223961280 is an abundant number, since it is smaller than the sum of its proper divisors (42712422720).

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

15223961280 is a wasteful number, since it uses less digits than its factorization.

15223961280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372 (or 3362 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

It can be divided in two parts, 15223 and 961280, that added together give a triangular number (976503 = T₁₃₉₇).

The spelling of 15223961280 in words is "fifteen billion, two hundred twenty-three million, nine hundred sixty-one thousand, two hundred eighty".