40006616449 has 2 divisors, whose sum is σ = 40006616450. Its totient is φ = 40006616448.

The previous prime is 40006616417. The next prime is 40006616473. The reversal of 40006616449 is 94461660004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23777640000 + 16228976449 = 154200^2 + 127393^2 .

It is a cyclic number.

It is not a de Polignac number, because 40006616449 - 2⁵ = 40006616417 is a prime.

It is not a weakly prime, because it can be changed into another prime (40006616849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003308224 + 20003308225.

It is an arithmetic number, because the mean of its divisors is an integer number (20003308225).

Almost surely, 2^40006616449 is an apocalyptic number.

It is an amenable number.

40006616449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40006616449 is an equidigital number, since it uses as much as digits as its factorization.

40006616449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 40006616449 in words is "forty billion, six million, six hundred sixteen thousand, four hundred forty-nine".