287310778012 has 12 divisors (see below), whose sum is σ = 502800691680. Its totient is φ = 143653437536.

The previous prime is 287310778009. The next prime is 287310778063. The reversal of 287310778012 is 210877013782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126937 + ... + 768592.

It is an arithmetic number, because the mean of its divisors is an integer number (41900057640).

Almost surely, 2^287310778012 is an apocalyptic number.

It is an amenable number.

287310778012 is a deficient number, since it is larger than the sum of its proper divisors (215489913668).

287310778012 is a wasteful number, since it uses less digits than its factorization.

287310778012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975740 (or 975738 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 46.

The spelling of 287310778012 in words is "two hundred eighty-seven billion, three hundred ten million, seven hundred seventy-eight thousand, twelve".