987773288393 has 2 divisors, whose sum is σ = 987773288394. Its totient is φ = 987773288392.

The previous prime is 987773288387. The next prime is 987773288459. The reversal of 987773288393 is 393882377789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 781337548489 + 206435739904 = 883933^2 + 454352^2 .

It is a cyclic number.

It is not a de Polignac number, because 987773288393 - 2³² = 983478321097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 987773288393.

It is not a weakly prime, because it can be changed into another prime (987703288393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493886644196 + 493886644197.

It is an arithmetic number, because the mean of its divisors is an integer number (493886644197).

Almost surely, 2^987773288393 is an apocalyptic number.

It is an amenable number.

987773288393 is a deficient number, since it is larger than the sum of its proper divisors (1).

987773288393 is an equidigital number, since it uses as much as digits as its factorization.

987773288393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768144384, while the sum is 74.

The spelling of 987773288393 in words is "nine hundred eighty-seven billion, seven hundred seventy-three million, two hundred eighty-eight thousand, three hundred ninety-three".