100096643338561 has 3 divisors (see below), whose sum is σ = 100096653343393. Its totient is φ = 100096633333730.

The previous prime is 100096643338529. The next prime is 100096643338631. The reversal of 100096643338561 is 165833346690001.

The square root of 100096643338561 is 10004831.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 100096643338561 - 2⁵ = 100096643338529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100096643308561) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5002416 + ... + 15007246.

Almost surely, 2^{100096643338561} is an apocalyptic number.

100096643338561 is the 10004831-st square number.

100096643338561 is the 5002416-th centered octagonal number.

It is an amenable number.

100096643338561 is a deficient number, since it is larger than the sum of its proper divisors (10004832).

100096643338561 is an frugal number, since it uses more digits than its factorization.

100096643338561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20009662 (or 10004831 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 100096643338561 in words is "one hundred trillion, ninety-six billion, six hundred forty-three million, three hundred thirty-eight thousand, five hundred sixty-one".