100406520322397 has 2 divisors, whose sum is σ = 100406520322398. Its totient is φ = 100406520322396.

The previous prime is 100406520322343. The next prime is 100406520322421. The reversal of 100406520322397 is 793223025604001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95468943014041 + 4937577308356 = 9770821^2 + 2222066^2 .

It is an emirp because it is prime and its reverse (793223025604001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100406520322397 - 2¹² = 100406520318301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100406520322327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50203260161198 + 50203260161199.

It is an arithmetic number, because the mean of its divisors is an integer number (50203260161199).

Almost surely, 2^{100406520322397} is an apocalyptic number.

It is an amenable number.

100406520322397 is a deficient number, since it is larger than the sum of its proper divisors (1).

100406520322397 is an equidigital number, since it uses as much as digits as its factorization.

100406520322397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 44.

Adding to 100406520322397 its reverse (793223025604001), we get a palindrome (893629545926398).

The spelling of 100406520322397 in words is "one hundred trillion, four hundred six billion, five hundred twenty million, three hundred twenty-two thousand, three hundred ninety-seven".