287242648385 has 72 divisors (see below), whose sum is σ = 441133234920. Its totient is φ = 178897635840.

The previous prime is 287242648339. The next prime is 287242648391. The reversal of 287242648385 is 583846242782.

It can be written as a sum of positive squares in 4 ways, for example, as 134958512689 + 152284135696 = 367367^2 + 390236^2 .

It is not a de Polignac number, because 287242648385 - 2¹⁸ = 287242386241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 38208647 + ... + 38216163.

It is an arithmetic number, because the mean of its divisors is an integer number (6126850485).

Almost surely, 2^287242648385 is an apocalyptic number.

It is an amenable number.

287242648385 is a deficient number, since it is larger than the sum of its proper divisors (153890586535).

287242648385 is a wasteful number, since it uses less digits than its factorization.

287242648385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847 (or 8829 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 59.

The spelling of 287242648385 in words is "two hundred eighty-seven billion, two hundred forty-two million, six hundred forty-eight thousand, three hundred eighty-five".