675011771281 has 9 divisors (see below), whose sum is σ = 679636562619. Its totient is φ = 670418256000.

The previous prime is 675011771237. The next prime is 675011771363. The reversal of 675011771281 is 182177110576.

It is a happy number.

The square root of 675011771281 is 821591.

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

It can be written as a sum of positive squares in only one way, i.e., 491108025681 + 183903745600 = 700791^2 + 428840^2 .

It is not a de Polignac number, because 675011771281 - 2¹¹ = 675011769233 is a prime.

It is a super-2 number, since 2×675011771281² (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 (675011771221) 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, 124057521 + ... + 124062961.

Almost surely, 2^675011771281 is an apocalyptic number.

675011771281 is the 821591-st square number.

675011771281 is the 410796-th centered octagonal number.

It is an amenable number.

675011771281 is a deficient number, since it is larger than the sum of its proper divisors (4624791338).

675011771281 is an frugal number, since it uses more digits than its factorization.

675011771281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11184 (or 5592 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 46.

The spelling of 675011771281 in words is "six hundred seventy-five billion, eleven million, seven hundred seventy-one thousand, two hundred eighty-one".