620345738153 has 2 divisors, whose sum is σ = 620345738154. Its totient is φ = 620345738152.

The previous prime is 620345738149. The next prime is 620345738227. The reversal of 620345738153 is 351837543026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 494922099049 + 125423639104 = 703507^2 + 354152^2 .

It is a cyclic number.

It is not a de Polignac number, because 620345738153 - 2² = 620345738149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 620345738098 and 620345738107.

It is not a weakly prime, because it can be changed into another prime (620341738153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310172869076 + 310172869077.

It is an arithmetic number, because the mean of its divisors is an integer number (310172869077).

Almost surely, 2^620345738153 is an apocalyptic number.

It is an amenable number.

620345738153 is a deficient number, since it is larger than the sum of its proper divisors (1).

620345738153 is an equidigital number, since it uses as much as digits as its factorization.

620345738153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 620345738153 in words is "six hundred twenty billion, three hundred forty-five million, seven hundred thirty-eight thousand, one hundred fifty-three".