100244443991 has 2 divisors, whose sum is σ = 100244443992. Its totient is φ = 100244443990.

The previous prime is 100244443961. The next prime is 100244444023. The reversal of 100244443991 is 199344442001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100244443991 - 2²² = 100240249687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100244443921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50122221995 + 50122221996.

It is an arithmetic number, because the mean of its divisors is an integer number (50122221996).

Almost surely, 2^100244443991 is an apocalyptic number.

100244443991 is a deficient number, since it is larger than the sum of its proper divisors (1).

100244443991 is an equidigital number, since it uses as much as digits as its factorization.

100244443991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

Adding to 100244443991 its reverse (199344442001), we get a palindrome (299588885992).

The spelling of 100244443991 in words is "one hundred billion, two hundred forty-four million, four hundred forty-three thousand, nine hundred ninety-one".