40636063609 has 2 divisors, whose sum is σ = 40636063610. Its totient is φ = 40636063608.

The previous prime is 40636063549. The next prime is 40636063621. The reversal of 40636063609 is 90636063604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32843587984 + 7792475625 = 181228^2 + 88275^2 .

It is a cyclic number.

It is not a de Polignac number, because 40636063609 - 2²³ = 40627675001 is a prime.

It is not a weakly prime, because it can be changed into another prime (40636063639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20318031804 + 20318031805.

It is an arithmetic number, because the mean of its divisors is an integer number (20318031805).

Almost surely, 2^40636063609 is an apocalyptic number.

It is an amenable number.

40636063609 is a deficient number, since it is larger than the sum of its proper divisors (1).

40636063609 is an equidigital number, since it uses as much as digits as its factorization.

40636063609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 43.

The spelling of 40636063609 in words is "forty billion, six hundred thirty-six million, sixty-three thousand, six hundred nine".