287981947106 has 36 divisors (see below), whose sum is σ = 525296897622. Its totient is φ = 118054689984.

The previous prime is 287981947103. The next prime is 287981947111. The reversal of 287981947106 is 601749189782.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 206865780625 + 81116166481 = 454825^2 + 284809^2 .

It is not an unprimeable number, because it can be changed into a prime (287981947103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2725655 + ... + 2829338.

Almost surely, 2^287981947106 is an apocalyptic number.

287981947106 is a deficient number, since it is larger than the sum of its proper divisors (237314950516).

287981947106 is a wasteful number, since it uses less digits than its factorization.

287981947106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555055 (or 5555025 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 62.

The spelling of 287981947106 in words is "two hundred eighty-seven billion, nine hundred eighty-one million, nine hundred forty-seven thousand, one hundred six".