275081275728 has 240 divisors, whose sum is σ = 932365324800. Its totient is φ = 74033326080.

The previous prime is 275081275717. The next prime is 275081275877. The reversal of 275081275728 is 827572180572.

It is a happy number.

275081275728 is a `hidden beast` number, since 2 + 7 + 50 + 8 + 12 + 7 + 572 + 8 = 666.

It is a super-2 number, since 2×275081275728² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1083753 + ... + 1313271.

It is an arithmetic number, because the mean of its divisors is an integer number (3884855520).

Almost surely, 2^275081275728 is an apocalyptic number.

275081275728 is a gapful number since it is divisible by the number (28) 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 275081275728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466182662400).

275081275728 is an abundant number, since it is smaller than the sum of its proper divisors (657284049072).

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

275081275728 is a wasteful number, since it uses less digits than its factorization.

275081275728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229610 (or 229601 counting only the distinct ones).

The product of its (nonzero) digits is 4390400, while the sum is 54.

The spelling of 275081275728 in words is "two hundred seventy-five billion, eighty-one million, two hundred seventy-five thousand, seven hundred twenty-eight".