420877715005441 has 2 divisors, whose sum is σ = 420877715005442. Its totient is φ = 420877715005440.

The previous prime is 420877715005417. The next prime is 420877715005487. The reversal of 420877715005441 is 144500517778024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214396334313841 + 206481380691600 = 14642279^2 + 14369460^2 .

It is a cyclic number.

It is not a de Polignac number, because 420877715005441 - 2⁷ = 420877715005313 is a prime.

It is not a weakly prime, because it can be changed into another prime (420877715035441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210438857502720 + 210438857502721.

It is an arithmetic number, because the mean of its divisors is an integer number (210438857502721).

Almost surely, 2^{420877715005441} is an apocalyptic number.

It is an amenable number.

420877715005441 is a deficient number, since it is larger than the sum of its proper divisors (1).

420877715005441 is an equidigital number, since it uses as much as digits as its factorization.

420877715005441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8780800, while the sum is 55.

The spelling of 420877715005441 in words is "four hundred twenty trillion, eight hundred seventy-seven billion, seven hundred fifteen million, five thousand, four hundred forty-one".