15506132411728 has 120 divisors (see below), whose sum is σ = 37106991518400. Its totient is φ = 6237150280704.

The previous prime is 15506132411659. The next prime is 15506132411827. The reversal of 15506132411728 is 82711423160551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3164383 + ... + 6405121.

It is an arithmetic number, because the mean of its divisors is an integer number (309224929320).

Almost surely, 2^{15506132411728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15506132411728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18553495759200).

15506132411728 is an abundant number, since it is smaller than the sum of its proper divisors (21600859106672).

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

15506132411728 is a wasteful number, since it uses less digits than its factorization.

15506132411728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241137 (or 3241124 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 15506132411728 in words is "fifteen trillion, five hundred six billion, one hundred thirty-two million, four hundred eleven thousand, seven hundred twenty-eight".