40945216405399 has 2 divisors, whose sum is σ = 40945216405400. Its totient is φ = 40945216405398.

The previous prime is 40945216405397. The next prime is 40945216405411. The reversal of 40945216405399 is 99350461254904.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40945216405399 - 2¹ = 40945216405397 is a prime.

Together with 40945216405397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40945216405397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20472608202699 + 20472608202700.

It is an arithmetic number, because the mean of its divisors is an integer number (20472608202700).

Almost surely, 2^{40945216405399} is an apocalyptic number.

40945216405399 is a deficient number, since it is larger than the sum of its proper divisors (1).

40945216405399 is an equidigital number, since it uses as much as digits as its factorization.

40945216405399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 40945216405399 in words is "forty trillion, nine hundred forty-five billion, two hundred sixteen million, four hundred five thousand, three hundred ninety-nine".