275871680388 has 96 divisors (see below), whose sum is σ = 721829001600. Its totient is φ = 91111609728.

The previous prime is 275871680363. The next prime is 275871680393. The reversal of 275871680388 is 883086178572.

275871680388 is a `hidden beast` number, since 2 + 7 + 587 + 16 + 8 + 0 + 38 + 8 = 666.

It is a super-2 number, since 2×275871680388² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5329206 + ... + 5380722.

It is an arithmetic number, because the mean of its divisors is an integer number (7519052100).

Almost surely, 2^275871680388 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 275871680388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360914500800).

275871680388 is an abundant number, since it is smaller than the sum of its proper divisors (445957321212).

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

275871680388 is a wasteful number, since it uses less digits than its factorization.

275871680388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51986 (or 51978 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 63.

The spelling of 275871680388 in words is "two hundred seventy-five billion, eight hundred seventy-one million, six hundred eighty thousand, three hundred eighty-eight".