40381563337 has 2 divisors, whose sum is σ = 40381563338. Its totient is φ = 40381563336.

The previous prime is 40381563269. The next prime is 40381563349. The reversal of 40381563337 is 73336518304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40264836921 + 116726416 = 200661^2 + 10804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40381563337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40381563293 and 40381563302.

It is not a weakly prime, because it can be changed into another prime (40381563437) 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, 20190781668 + 20190781669.

It is an arithmetic number, because the mean of its divisors is an integer number (20190781669).

Almost surely, 2^40381563337 is an apocalyptic number.

It is an amenable number.

40381563337 is a deficient number, since it is larger than the sum of its proper divisors (1).

40381563337 is an equidigital number, since it uses as much as digits as its factorization.

40381563337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 40381563337 in words is "forty billion, three hundred eighty-one million, five hundred sixty-three thousand, three hundred thirty-seven".