15609260123220 has 288 divisors, whose sum is σ = 45040708177920. Its totient is φ = 4038414382080.

The previous prime is 15609260123203. The next prime is 15609260123221. The reversal of 15609260123220 is 2232106290651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15609260123221) 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 95 ways as a sum of consecutive naturals, for example, 7855691067 + ... + 7855693053.

It is an arithmetic number, because the mean of its divisors is an integer number (156391347840).

Almost surely, 2^{15609260123220} is an apocalyptic number.

15609260123220 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 15609260123220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22520354088960).

15609260123220 is an abundant number, since it is smaller than the sum of its proper divisors (29431448054700).

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

15609260123220 is a wasteful number, since it uses less digits than its factorization.

15609260123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 15609260123220 in words is "fifteen trillion, six hundred nine billion, two hundred sixty million, one hundred twenty-three thousand, two hundred twenty".