40405861043 has 2 divisors, whose sum is σ = 40405861044. Its totient is φ = 40405861042.

The previous prime is 40405861033. The next prime is 40405861081. The reversal of 40405861043 is 34016850404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40405861043 - 2¹⁴ = 40405844659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40405860994 and 40405861012.

It is not a weakly prime, because it can be changed into another prime (40405861003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202930521 + 20202930522.

It is an arithmetic number, because the mean of its divisors is an integer number (20202930522).

Almost surely, 2^40405861043 is an apocalyptic number.

40405861043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40405861043 is an equidigital number, since it uses as much as digits as its factorization.

40405861043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 40405861043 in words is "forty billion, four hundred five million, eight hundred sixty-one thousand, forty-three".