356165027681 has 2 divisors, whose sum is σ = 356165027682. Its totient is φ = 356165027680.

The previous prime is 356165027663. The next prime is 356165027693. The reversal of 356165027681 is 186720561653.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327870760000 + 28294267681 = 572600^2 + 168209^2 .

It is a cyclic number.

It is not a de Polignac number, because 356165027681 - 2²² = 356160833377 is a prime.

It is a super-2 number, since 2×356165027681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (356165027381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178082513840 + 178082513841.

It is an arithmetic number, because the mean of its divisors is an integer number (178082513841).

Almost surely, 2^356165027681 is an apocalyptic number.

It is an amenable number.

356165027681 is a deficient number, since it is larger than the sum of its proper divisors (1).

356165027681 is an equidigital number, since it uses as much as digits as its factorization.

356165027681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 356165027681 in words is "three hundred fifty-six billion, one hundred sixty-five million, twenty-seven thousand, six hundred eighty-one".