40707381391 has 2 divisors, whose sum is σ = 40707381392. Its totient is φ = 40707381390.

The previous prime is 40707381373. The next prime is 40707381437. The reversal of 40707381391 is 19318370704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40707381391 - 2²⁵ = 40673826959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40707381301) 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, 20353690695 + 20353690696.

It is an arithmetic number, because the mean of its divisors is an integer number (20353690696).

Almost surely, 2^40707381391 is an apocalyptic number.

40707381391 is a deficient number, since it is larger than the sum of its proper divisors (1).

40707381391 is an equidigital number, since it uses as much as digits as its factorization.

40707381391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 40707381391 in words is "forty billion, seven hundred seven million, three hundred eighty-one thousand, three hundred ninety-one".