2044552051991 has 2 divisors, whose sum is σ = 2044552051992. Its totient is φ = 2044552051990.

The previous prime is 2044552051987. The next prime is 2044552052009. The reversal of 2044552051991 is 1991502554402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2044552051991 - 2² = 2044552051987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2044552051921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022276025995 + 1022276025996.

It is an arithmetic number, because the mean of its divisors is an integer number (1022276025996).

Almost surely, 2^{2044552051991} is an apocalyptic number.

2044552051991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044552051991 is an equidigital number, since it uses as much as digits as its factorization.

2044552051991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 2044552051991 in words is "two trillion, forty-four billion, five hundred fifty-two million, fifty-one thousand, nine hundred ninety-one".