40361667637 has 2 divisors, whose sum is σ = 40361667638. Its totient is φ = 40361667636.

The previous prime is 40361667527. The next prime is 40361667641. The reversal of 40361667637 is 73676616304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39606572196 + 755095441 = 199014^2 + 27479^2 .

It is a cyclic number.

It is not a de Polignac number, because 40361667637 - 2⁷ = 40361667509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40361667667) 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, 20180833818 + 20180833819.

It is an arithmetic number, because the mean of its divisors is an integer number (20180833819).

Almost surely, 2^40361667637 is an apocalyptic number.

It is an amenable number.

40361667637 is a deficient number, since it is larger than the sum of its proper divisors (1).

40361667637 is an equidigital number, since it uses as much as digits as its factorization.

40361667637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 40361667637 in words is "forty billion, three hundred sixty-one million, six hundred sixty-seven thousand, six hundred thirty-seven".