620145636044471 has 2 divisors, whose sum is σ = 620145636044472. Its totient is φ = 620145636044470.

The previous prime is 620145636044453. The next prime is 620145636044491. The reversal of 620145636044471 is 174440636541026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620145636044471 - 2³⁴ = 620128456175287 is a prime.

It is a super-3 number, since 3×620145636044471³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620145636044491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310072818022235 + 310072818022236.

It is an arithmetic number, because the mean of its divisors is an integer number (310072818022236).

Almost surely, 2^{620145636044471} is an apocalyptic number.

620145636044471 is a deficient number, since it is larger than the sum of its proper divisors (1).

620145636044471 is an equidigital number, since it uses as much as digits as its factorization.

620145636044471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 620145636044471 in words is "six hundred twenty trillion, one hundred forty-five billion, six hundred thirty-six million, forty-four thousand, four hundred seventy-one".