100443512513 has 8 divisors (see below), whose sum is σ = 104978291880. Its totient is φ = 95980147200.

The previous prime is 100443512509. The next prime is 100443512591. The reversal of 100443512513 is 315215344001.

It can be written as a sum of positive squares in 4 ways, for example, as 46616264464 + 53827248049 = 215908^2 + 232007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100443512513 - 2² = 100443512509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100443512503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17850638 + ... + 17856263.

It is an arithmetic number, because the mean of its divisors is an integer number (13122286485).

Almost surely, 2^100443512513 is an apocalyptic number.

It is an amenable number.

100443512513 is a deficient number, since it is larger than the sum of its proper divisors (4534779367).

100443512513 is an equidigital number, since it uses as much as digits as its factorization.

100443512513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35707027.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 100443512513 its reverse (315215344001), we get a palindrome (415658856514).

The spelling of 100443512513 in words is "one hundred billion, four hundred forty-three million, five hundred twelve thousand, five hundred thirteen".