40743407381 has 2 divisors, whose sum is σ = 40743407382. Its totient is φ = 40743407380.

The previous prime is 40743407377. The next prime is 40743407413. The reversal of 40743407381 is 18370434704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35564302225 + 5179105156 = 188585^2 + 71966^2 .

It is a cyclic number.

It is not a de Polignac number, because 40743407381 - 2² = 40743407377 is a prime.

It is a super-2 number, since 2×40743407381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40743487381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20371703690 + 20371703691.

It is an arithmetic number, because the mean of its divisors is an integer number (20371703691).

Almost surely, 2^40743407381 is an apocalyptic number.

It is an amenable number.

40743407381 is a deficient number, since it is larger than the sum of its proper divisors (1).

40743407381 is an equidigital number, since it uses as much as digits as its factorization.

40743407381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 40743407381 in words is "forty billion, seven hundred forty-three million, four hundred seven thousand, three hundred eighty-one".