100244443997 has 4 divisors (see below), whose sum is σ = 100250038236. Its totient is φ = 100238849760.

The previous prime is 100244443991. The next prime is 100244444023. The reversal of 100244443997 is 799344442001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799344442001 = 7 ⋅114192063143.

It can be written as a sum of positive squares in 2 ways, for example, as 33394273081 + 66850170916 = 182741^2 + 258554^2 .

It is a cyclic number.

It is not a de Polignac number, because 100244443997 - 2¹⁸ = 100244181853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100244443991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2770154 + ... + 2806107.

It is an arithmetic number, because the mean of its divisors is an integer number (25062509559).

Almost surely, 2^100244443997 is an apocalyptic number.

It is an amenable number.

100244443997 is a deficient number, since it is larger than the sum of its proper divisors (5594239).

100244443997 is an equidigital number, since it uses as much as digits as its factorization.

100244443997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594238.

The product of its (nonzero) digits is 870912, while the sum is 47.

Adding to 100244443997 its reverse (799344442001), we get a palindrome (899588885998).

The spelling of 100244443997 in words is "one hundred billion, two hundred forty-four million, four hundred forty-three thousand, nine hundred ninety-seven".