427770153817 has 2 divisors, whose sum is σ = 427770153818. Its totient is φ = 427770153816.

The previous prime is 427770153749. The next prime is 427770153821. The reversal of 427770153817 is 718351077724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426642806041 + 1127347776 = 653179^2 + 33576^2 .

It is a cyclic number.

It is not a de Polignac number, because 427770153817 - 2³⁵ = 393410415449 is a prime.

It is not a weakly prime, because it can be changed into another prime (427770153827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213885076908 + 213885076909.

It is an arithmetic number, because the mean of its divisors is an integer number (213885076909).

Almost surely, 2^427770153817 is an apocalyptic number.

It is an amenable number.

427770153817 is a deficient number, since it is larger than the sum of its proper divisors (1).

427770153817 is an equidigital number, since it uses as much as digits as its factorization.

427770153817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304960, while the sum is 52.

The spelling of 427770153817 in words is "four hundred twenty-seven billion, seven hundred seventy million, one hundred fifty-three thousand, eight hundred seventeen".