41988267691 has 2 divisors, whose sum is σ = 41988267692. Its totient is φ = 41988267690.

The previous prime is 41988267689. The next prime is 41988267709. The reversal of 41988267691 is 19676288914.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41988267691 - 2¹ = 41988267689 is a prime.

Together with 41988267689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (41988267611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20994133845 + 20994133846.

It is an arithmetic number, because the mean of its divisors is an integer number (20994133846).

Almost surely, 2^41988267691 is an apocalyptic number.

41988267691 is a deficient number, since it is larger than the sum of its proper divisors (1).

41988267691 is an equidigital number, since it uses as much as digits as its factorization.

41988267691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 61.

The spelling of 41988267691 in words is "forty-one billion, nine hundred eighty-eight million, two hundred sixty-seven thousand, six hundred ninety-one".