100406520322453 has 4 divisors (see below), whose sum is σ = 100427433995308. Its totient is φ = 100385606649600.

The previous prime is 100406520322421. The next prime is 100406520322523. The reversal of 100406520322453 is 354223025604001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65863888541649 + 34542631780804 = 8115657^2 + 5877298^2 .

It is a cyclic number.

It is not a de Polignac number, because 100406520322453 - 2⁵ = 100406520322421 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 (100406520022453) 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, 10456829226 + ... + 10456838827.

It is an arithmetic number, because the mean of its divisors is an integer number (25106858498827).

Almost surely, 2^{100406520322453} is an apocalyptic number.

It is an amenable number.

100406520322453 is a deficient number, since it is larger than the sum of its proper divisors (20913672855).

100406520322453 is an equidigital number, since it uses as much as digits as its factorization.

100406520322453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20913672854.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 100406520322453 its reverse (354223025604001), we get a palindrome (454629545926454).

The spelling of 100406520322453 in words is "one hundred trillion, four hundred six billion, five hundred twenty million, three hundred twenty-two thousand, four hundred fifty-three".