420116541697 has 2 divisors, whose sum is σ = 420116541698. Its totient is φ = 420116541696.

The previous prime is 420116541643. The next prime is 420116541701. The reversal of 420116541697 is 796145611024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322725111921 + 97391429776 = 568089^2 + 312076^2 .

It is a cyclic number.

It is not a de Polignac number, because 420116541697 - 2¹¹ = 420116539649 is a prime.

It is not a weakly prime, because it can be changed into another prime (420116541197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210058270848 + 210058270849.

It is an arithmetic number, because the mean of its divisors is an integer number (210058270849).

Almost surely, 2^420116541697 is an apocalyptic number.

It is an amenable number.

420116541697 is a deficient number, since it is larger than the sum of its proper divisors (1).

420116541697 is an equidigital number, since it uses as much as digits as its factorization.

420116541697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 420116541697 in words is "four hundred twenty billion, one hundred sixteen million, five hundred forty-one thousand, six hundred ninety-seven".