40400667361 has 2 divisors, whose sum is σ = 40400667362. Its totient is φ = 40400667360.

The previous prime is 40400667317. The next prime is 40400667397. The reversal of 40400667361 is 16376600404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21186549136 + 19214118225 = 145556^2 + 138615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40400667361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40400667361.

It is not a weakly prime, because it can be changed into another prime (40400667301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200333680 + 20200333681.

It is an arithmetic number, because the mean of its divisors is an integer number (20200333681).

Almost surely, 2^40400667361 is an apocalyptic number.

It is an amenable number.

40400667361 is a deficient number, since it is larger than the sum of its proper divisors (1).

40400667361 is an equidigital number, since it uses as much as digits as its factorization.

40400667361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 40400667361 in words is "forty billion, four hundred million, six hundred sixty-seven thousand, three hundred sixty-one".