621039112073 has 2 divisors, whose sum is σ = 621039112074. Its totient is φ = 621039112072.

The previous prime is 621039112051. The next prime is 621039112087. The reversal of 621039112073 is 370211930126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 620939272009 + 99840064 = 787997^2 + 9992^2 .

It is a cyclic number.

It is not a de Polignac number, because 621039112073 - 2¹² = 621039107977 is a prime.

It is not a weakly prime, because it can be changed into another prime (621039112003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310519556036 + 310519556037.

It is an arithmetic number, because the mean of its divisors is an integer number (310519556037).

Almost surely, 2^621039112073 is an apocalyptic number.

It is an amenable number.

621039112073 is a deficient number, since it is larger than the sum of its proper divisors (1).

621039112073 is an equidigital number, since it uses as much as digits as its factorization.

621039112073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 621039112073 in words is "six hundred twenty-one billion, thirty-nine million, one hundred twelve thousand, seventy-three".