501152423661401 has 2 divisors, whose sum is σ = 501152423661402. Its totient is φ = 501152423661400.

The previous prime is 501152423661397. The next prime is 501152423661413. The reversal of 501152423661401 is 104166324251105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479859736301401 + 21292687360000 = 21905701^2 + 4614400^2 .

It is a cyclic number.

It is not a de Polignac number, because 501152423661401 - 2² = 501152423661397 is a prime.

It is not a weakly prime, because it can be changed into another prime (501152423631401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250576211830700 + 250576211830701.

It is an arithmetic number, because the mean of its divisors is an integer number (250576211830701).

Almost surely, 2^{501152423661401} is an apocalyptic number.

It is an amenable number.

501152423661401 is a deficient number, since it is larger than the sum of its proper divisors (1).

501152423661401 is an equidigital number, since it uses as much as digits as its factorization.

501152423661401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 501152423661401 in words is "five hundred one trillion, one hundred fifty-two billion, four hundred twenty-three million, six hundred sixty-one thousand, four hundred one".