401215128533 has 2 divisors, whose sum is σ = 401215128534. Its totient is φ = 401215128532.

The previous prime is 401215128463. The next prime is 401215128553. The reversal of 401215128533 is 335821512104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383381395684 + 17833732849 = 619178^2 + 133543^2 .

It is a cyclic number.

It is not a de Polignac number, because 401215128533 - 2¹⁸ = 401214866389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401215128493 and 401215128502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401215128553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200607564266 + 200607564267.

It is an arithmetic number, because the mean of its divisors is an integer number (200607564267).

Almost surely, 2^401215128533 is an apocalyptic number.

It is an amenable number.

401215128533 is a deficient number, since it is larger than the sum of its proper divisors (1).

401215128533 is an equidigital number, since it uses as much as digits as its factorization.

401215128533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 401215128533 in words is "four hundred one billion, two hundred fifteen million, one hundred twenty-eight thousand, five hundred thirty-three".