40333743649 has 2 divisors, whose sum is σ = 40333743650. Its totient is φ = 40333743648.

The previous prime is 40333743557. The next prime is 40333743679. The reversal of 40333743649 is 94634733304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40298555025 + 35188624 = 200745^2 + 5932^2 .

It is a cyclic number.

It is not a de Polignac number, because 40333743649 - 2⁷ = 40333743521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40333743599 and 40333743608.

It is not a weakly prime, because it can be changed into another prime (40333743679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20166871824 + 20166871825.

It is an arithmetic number, because the mean of its divisors is an integer number (20166871825).

Almost surely, 2^40333743649 is an apocalyptic number.

It is an amenable number.

40333743649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40333743649 is an equidigital number, since it uses as much as digits as its factorization.

40333743649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 46.

The spelling of 40333743649 in words is "forty billion, three hundred thirty-three million, seven hundred forty-three thousand, six hundred forty-nine".