1408822497991 has 2 divisors, whose sum is σ = 1408822497992. Its totient is φ = 1408822497990.

The previous prime is 1408822497989. The next prime is 1408822498043. The reversal of 1408822497991 is 1997942288041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1408822497991 - 2¹ = 1408822497989 is a prime.

Together with 1408822497989, 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 (1408822497091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704411248995 + 704411248996.

It is an arithmetic number, because the mean of its divisors is an integer number (704411248996).

Almost surely, 2^{1408822497991} is an apocalyptic number.

1408822497991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408822497991 is an equidigital number, since it uses as much as digits as its factorization.

1408822497991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 64.

The spelling of 1408822497991 in words is "one trillion, four hundred eight billion, eight hundred twenty-two million, four hundred ninety-seven thousand, nine hundred ninety-one".