420613892157089 has 2 divisors, whose sum is σ = 420613892157090. Its totient is φ = 420613892157088.

The previous prime is 420613892157029. The next prime is 420613892157097. The reversal of 420613892157089 is 980751298316024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357839836389025 + 62774055768064 = 18916655^2 + 7923008^2 .

It is a cyclic number.

It is not a de Polignac number, because 420613892157089 - 2¹⁶ = 420613892091553 is a prime.

It is not a weakly prime, because it can be changed into another prime (420613892157029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210306946078544 + 210306946078545.

It is an arithmetic number, because the mean of its divisors is an integer number (210306946078545).

It is a 1-persistent number, because it is pandigital, but 2⋅420613892157089 = 841227784314178 is not.

Almost surely, 2^{420613892157089} is an apocalyptic number.

It is an amenable number.

420613892157089 is a deficient number, since it is larger than the sum of its proper divisors (1).

420613892157089 is an equidigital number, since it uses as much as digits as its factorization.

420613892157089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 65.

The spelling of 420613892157089 in words is "four hundred twenty trillion, six hundred thirteen billion, eight hundred ninety-two million, one hundred fifty-seven thousand, eighty-nine".