620873909378027 has 2 divisors, whose sum is σ = 620873909378028. Its totient is φ = 620873909378026.

The previous prime is 620873909377973. The next prime is 620873909378057. The reversal of 620873909378027 is 720873909378026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620873909378027 - 2⁶ = 620873909377963 is a prime.

It is a super-2 number, since 2×620873909378027² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (620873909378057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310436954689013 + 310436954689014.

It is an arithmetic number, because the mean of its divisors is an integer number (310436954689014).

Almost surely, 2^{620873909378027} is an apocalyptic number.

620873909378027 is a deficient number, since it is larger than the sum of its proper divisors (1).

620873909378027 is an equidigital number, since it uses as much as digits as its factorization.

620873909378027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384072192, while the sum is 71.

Subtracting 620873909378027 from its reverse (720873909378026), we obtain a palindrome (99999999999999).

The spelling of 620873909378027 in words is "six hundred twenty trillion, eight hundred seventy-three billion, nine hundred nine million, three hundred seventy-eight thousand, twenty-seven".