64185562808041 has 2 divisors, whose sum is σ = 64185562808042. Its totient is φ = 64185562808040.

The previous prime is 64185562807963. The next prime is 64185562808207. The reversal of 64185562808041 is 14080826558146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33045022310400 + 31140540497641 = 5748480^2 + 5580371^2 .

It is a cyclic number.

It is not a de Polignac number, because 64185562808041 - 2¹³ = 64185562799849 is a prime.

It is a super-2 number, since 2×64185562808041² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64185562308041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32092781404020 + 32092781404021.

It is an arithmetic number, because the mean of its divisors is an integer number (32092781404021).

Almost surely, 2^{64185562808041} is an apocalyptic number.

It is an amenable number.

64185562808041 is a deficient number, since it is larger than the sum of its proper divisors (1).

64185562808041 is an equidigital number, since it uses as much as digits as its factorization.

64185562808041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14745600, while the sum is 58.

The spelling of 64185562808041 in words is "sixty-four trillion, one hundred eighty-five billion, five hundred sixty-two million, eight hundred eight thousand, forty-one".