275248178881 has 9 divisors (see below), whose sum is σ = 298057188681. Its totient is φ = 254068946352.

The previous prime is 275248178873. The next prime is 275248178923. The reversal of 275248178881 is 188871842572.

The square root of 275248178881 is 524641.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 194841905281 + 80406273600 = 441409^2 + 283560^2 .

It is not a de Polignac number, because 275248178881 - 2³ = 275248178873 is a prime.

It is a super-2 number, since 2×275248178881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275248178851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6800155 + ... + 6840511.

It is an arithmetic number, because the mean of its divisors is an integer number (33117465409).

Almost surely, 2^275248178881 is an apocalyptic number.

275248178881 is the 524641-st square number.

275248178881 is the 262321-st centered octagonal number.

It is an amenable number.

275248178881 is a deficient number, since it is larger than the sum of its proper divisors (22809009800).

275248178881 is an frugal number, since it uses more digits than its factorization.

275248178881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80740 (or 40370 counting only the distinct ones).

The product of its digits is 16056320, while the sum is 61.

The spelling of 275248178881 in words is "two hundred seventy-five billion, two hundred forty-eight million, one hundred seventy-eight thousand, eight hundred eighty-one".