40813087847449 has 2 divisors, whose sum is σ = 40813087847450. Its totient is φ = 40813087847448.

The previous prime is 40813087847437. The next prime is 40813087847459. The reversal of 40813087847449 is 94474878031804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27904732295049 + 12908355552400 = 5282493^2 + 3592820^2 .

It is a cyclic number.

It is not a de Polignac number, because 40813087847449 - 2⁵ = 40813087847417 is a prime.

It is not a weakly prime, because it can be changed into another prime (40813087847459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20406543923724 + 20406543923725.

It is an arithmetic number, because the mean of its divisors is an integer number (20406543923725).

Almost surely, 2^{40813087847449} is an apocalyptic number.

It is an amenable number.

40813087847449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40813087847449 is an equidigital number, since it uses as much as digits as its factorization.

40813087847449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 173408256, while the sum is 67.

The spelling of 40813087847449 in words is "forty trillion, eight hundred thirteen billion, eighty-seven million, eight hundred forty-seven thousand, four hundred forty-nine".