287039849121 has 21 divisors (see below), whose sum is σ = 430384590849. Its totient is φ = 191350255716.

The previous prime is 287039848981. The next prime is 287039849123. The reversal of 287039849121 is 121948930782.

The square root of 287039849121 is 535761.

It is a perfect power (a square), and thus also a powerful number.

287039849121 is a `hidden beast` number, since 28 + 70 + 398 + 49 + 121 = 666.

It is not a de Polignac number, because 287039849121 - 2¹⁵ = 287039816353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287039849123) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 14455626 + ... + 14475468.

Almost surely, 2^287039849121 is an apocalyptic number.

287039849121 is the 535761-st square number.

287039849121 is the 267881-st centered octagonal number.

It is an amenable number.

287039849121 is a deficient number, since it is larger than the sum of its proper divisors (143344741728).

287039849121 is an frugal number, since it uses more digits than its factorization.

287039849121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39704 (or 19846 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 287039849121 in words is "two hundred eighty-seven billion, thirty-nine million, eight hundred forty-nine thousand, one hundred twenty-one".