15194245738728 has 256 divisors, whose sum is σ = 45683025408000. Its totient is φ = 4119322927104.

The previous prime is 15194245738697. The next prime is 15194245738741. The reversal of 15194245738728 is 82783754249151.

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, 1757165301 + ... + 1757173947.

It is an arithmetic number, because the mean of its divisors is an integer number (178449318000).

Almost surely, 2^{15194245738728} 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 15194245738728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22841512704000).

15194245738728 is an abundant number, since it is smaller than the sum of its proper divisors (30488779669272).

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

15194245738728 is a wasteful number, since it uses less digits than its factorization.

15194245738728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864 (or 14860 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 66.

The spelling of 15194245738728 in words is "fifteen trillion, one hundred ninety-four billion, two hundred forty-five million, seven hundred thirty-eight thousand, seven hundred twenty-eight".