40381795537 has 2 divisors, whose sum is σ = 40381795538. Its totient is φ = 40381795536.

The previous prime is 40381795507. The next prime is 40381795541. The reversal of 40381795537 is 73559718304.

40381795537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38274618321 + 2107177216 = 195639^2 + 45904^2 .

It is a cyclic number.

It is not a de Polignac number, because 40381795537 - 2³¹ = 38234311889 is a prime.

It is not a weakly prime, because it can be changed into another prime (40381795507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20190897768 + 20190897769.

It is an arithmetic number, because the mean of its divisors is an integer number (20190897769).

Almost surely, 2^40381795537 is an apocalyptic number.

It is an amenable number.

40381795537 is a deficient number, since it is larger than the sum of its proper divisors (1).

40381795537 is an equidigital number, since it uses as much as digits as its factorization.

40381795537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 40381795537 in words is "forty billion, three hundred eighty-one million, seven hundred ninety-five thousand, five hundred thirty-seven".