1628201013331 has 2 divisors, whose sum is σ = 1628201013332. Its totient is φ = 1628201013330.

The previous prime is 1628201013301. The next prime is 1628201013337. The reversal of 1628201013331 is 1333101028261.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1628201013331 - 2¹⁹ = 1628200489043 is a prime.

It is a super-2 number, since 2×1628201013331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1628201013293 and 1628201013302.

It is not a weakly prime, because it can be changed into another prime (1628201013337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814100506665 + 814100506666.

It is an arithmetic number, because the mean of its divisors is an integer number (814100506666).

Almost surely, 2^{1628201013331} is an apocalyptic number.

1628201013331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628201013331 is an equidigital number, since it uses as much as digits as its factorization.

1628201013331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 1628201013331 in words is "one trillion, six hundred twenty-eight billion, two hundred one million, thirteen thousand, three hundred thirty-one".