284278763381 has 2 divisors, whose sum is σ = 284278763382. Its totient is φ = 284278763380.

The previous prime is 284278763347. The next prime is 284278763387. The reversal of 284278763381 is 183367872482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267056400625 + 17222362756 = 516775^2 + 131234^2 .

It is a cyclic number.

It is not a de Polignac number, because 284278763381 - 2²² = 284274569077 is a prime.

It is a super-2 number, since 2×284278763381² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 284278763381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284278763387) 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, 142139381690 + 142139381691.

It is an arithmetic number, because the mean of its divisors is an integer number (142139381691).

Almost surely, 2^284278763381 is an apocalyptic number.

It is an amenable number.

284278763381 is a deficient number, since it is larger than the sum of its proper divisors (1).

284278763381 is an equidigital number, since it uses as much as digits as its factorization.

284278763381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21676032, while the sum is 59.

The spelling of 284278763381 in words is "two hundred eighty-four billion, two hundred seventy-eight million, seven hundred sixty-three thousand, three hundred eighty-one".