755971313179561 has 2 divisors, whose sum is σ = 755971313179562. Its totient is φ = 755971313179560.

The previous prime is 755971313179553. The next prime is 755971313179609. The reversal of 755971313179561 is 165971313179557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 486740448218025 + 269230864961536 = 22062195^2 + 16408256^2 .

It is a cyclic number.

It is not a de Polignac number, because 755971313179561 - 2³ = 755971313179553 is a prime.

It is a super-3 number, since 3×755971313179561³ (a number of 46 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (755971313179501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377985656589780 + 377985656589781.

It is an arithmetic number, because the mean of its divisors is an integer number (377985656589781).

Almost surely, 2^{755971313179561} is an apocalyptic number.

It is an amenable number.

755971313179561 is a deficient number, since it is larger than the sum of its proper divisors (1).

755971313179561 is an equidigital number, since it uses as much as digits as its factorization.

755971313179561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 187535250, while the sum is 70.

The spelling of 755971313179561 in words is "seven hundred fifty-five trillion, nine hundred seventy-one billion, three hundred thirteen million, one hundred seventy-nine thousand, five hundred sixty-one".