35636542181 has 2 divisors, whose sum is σ = 35636542182. Its totient is φ = 35636542180.

The previous prime is 35636542157. The next prime is 35636542223. The reversal of 35636542181 is 18124563653.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19158712225 + 16477829956 = 138415^2 + 128366^2 .

It is a cyclic number.

It is not a de Polignac number, because 35636542181 - 2¹⁴ = 35636525797 is a prime.

It is a super-2 number, since 2×35636542181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35636542121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17818271090 + 17818271091.

It is an arithmetic number, because the mean of its divisors is an integer number (17818271091).

Almost surely, 2^35636542181 is an apocalyptic number.

It is an amenable number.

35636542181 is a deficient number, since it is larger than the sum of its proper divisors (1).

35636542181 is an equidigital number, since it uses as much as digits as its factorization.

35636542181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 44.

The spelling of 35636542181 in words is "thirty-five billion, six hundred thirty-six million, five hundred forty-two thousand, one hundred eighty-one".