287648981679 has 8 divisors (see below), whose sum is σ = 395903974912. Its totient is φ = 185579988120.

The previous prime is 287648981621. The next prime is 287648981693. The reversal of 287648981679 is 976189846782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 287648981679 - 2²⁰ = 287647933103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 287648981679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287648981479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546499809 + ... + 1546499994.

It is an arithmetic number, because the mean of its divisors is an integer number (49487996864).

Almost surely, 2^287648981679 is an apocalyptic number.

287648981679 is a deficient number, since it is larger than the sum of its proper divisors (108254993233).

287648981679 is a wasteful number, since it uses less digits than its factorization.

287648981679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092999837.

The product of its digits is 585252864, while the sum is 75.

The spelling of 287648981679 in words is "two hundred eighty-seven billion, six hundred forty-eight million, nine hundred eighty-one thousand, six hundred seventy-nine".