620226066451 has 2 divisors, whose sum is σ = 620226066452. Its totient is φ = 620226066450.

The previous prime is 620226066389. The next prime is 620226066461. The reversal of 620226066451 is 154660622026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620226066451 - 2¹⁷ = 620225935379 is a prime.

It is a super-3 number, since 3×620226066451³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (620226066461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310113033225 + 310113033226.

It is an arithmetic number, because the mean of its divisors is an integer number (310113033226).

Almost surely, 2^620226066451 is an apocalyptic number.

620226066451 is a deficient number, since it is larger than the sum of its proper divisors (1).

620226066451 is an equidigital number, since it uses as much as digits as its factorization.

620226066451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 620226066451 its reverse (154660622026), we get a palindrome (774886688477).

The spelling of 620226066451 in words is "six hundred twenty billion, two hundred twenty-six million, sixty-six thousand, four hundred fifty-one".