27500154304128 has 256 divisors, whose sum is σ = 80352356106240. Its totient is φ = 8263960104960.

The previous prime is 27500154304097. The next prime is 27500154304141. The reversal of 27500154304128 is 82140345100572.

It is a self number, because there is not a number n which added to its sum of digits gives 27500154304128.

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 31 ways as a sum of consecutive naturals, for example, 1299802926 + ... + 1299824082.

It is an arithmetic number, because the mean of its divisors is an integer number (313876391040).

Almost surely, 2^{27500154304128} 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 27500154304128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40176178053120).

27500154304128 is an abundant number, since it is smaller than the sum of its proper divisors (52852201802112).

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

27500154304128 is a wasteful number, since it uses less digits than its factorization.

27500154304128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23735 (or 23723 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 27500154304128 in words is "twenty-seven trillion, five hundred billion, one hundred fifty-four million, three hundred four thousand, one hundred twenty-eight".