36665990401 has 2 divisors, whose sum is σ = 36665990402. Its totient is φ = 36665990400.

The previous prime is 36665990357. The next prime is 36665990423. The reversal of 36665990401 is 10409956663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32679962176 + 3986028225 = 180776^2 + 63135^2 .

It is a cyclic number.

It is not a de Polignac number, because 36665990401 - 2⁹ = 36665989889 is a prime.

It is not a weakly prime, because it can be changed into another prime (36665090401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18332995200 + 18332995201.

It is an arithmetic number, because the mean of its divisors is an integer number (18332995201).

Almost surely, 2^36665990401 is an apocalyptic number.

It is an amenable number.

36665990401 is a deficient number, since it is larger than the sum of its proper divisors (1).

36665990401 is an equidigital number, since it uses as much as digits as its factorization.

36665990401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 36665990401 in words is "thirty-six billion, six hundred sixty-five million, nine hundred ninety thousand, four hundred one".