620372018447 has 2 divisors, whose sum is σ = 620372018448. Its totient is φ = 620372018446.

The previous prime is 620372018411. The next prime is 620372018459. The reversal of 620372018447 is 744810273026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620372018447 - 2³⁸ = 345494111503 is a prime.

It is a super-2 number, since 2×620372018447² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620372018398 and 620372018407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620372018347) 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, 310186009223 + 310186009224.

It is an arithmetic number, because the mean of its divisors is an integer number (310186009224).

Almost surely, 2^620372018447 is an apocalyptic number.

620372018447 is a deficient number, since it is larger than the sum of its proper divisors (1).

620372018447 is an equidigital number, since it uses as much as digits as its factorization.

620372018447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 620372018447 in words is "six hundred twenty billion, three hundred seventy-two million, eighteen thousand, four hundred forty-seven".