40781893043 has 2 divisors, whose sum is σ = 40781893044. Its totient is φ = 40781893042.

The previous prime is 40781892971. The next prime is 40781893049. The reversal of 40781893043 is 34039818704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40781893043 - 2¹² = 40781888947 is a prime.

It is not a weakly prime, because it can be changed into another prime (40781893049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20390946521 + 20390946522.

It is an arithmetic number, because the mean of its divisors is an integer number (20390946522).

Almost surely, 2^40781893043 is an apocalyptic number.

40781893043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40781893043 is an equidigital number, since it uses as much as digits as its factorization.

40781893043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 40781893043 in words is "forty billion, seven hundred eighty-one million, eight hundred ninety-three thousand, forty-three".