287872456817 has 16 divisors (see below), whose sum is σ = 320074327872. Its totient is φ = 256679142720.

The previous prime is 287872456801. The next prime is 287872456831. The reversal of 287872456817 is 718654278782.

It is not a de Polignac number, because 287872456817 - 2⁴ = 287872456801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287872456867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1707563 + ... + 1868559.

It is an arithmetic number, because the mean of its divisors is an integer number (20004645492).

Almost surely, 2^287872456817 is an apocalyptic number.

It is an amenable number.

287872456817 is a deficient number, since it is larger than the sum of its proper divisors (32201871055).

287872456817 is a wasteful number, since it uses less digits than its factorization.

287872456817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164128.

The product of its digits is 84295680, while the sum is 65.

The spelling of 287872456817 in words is "two hundred eighty-seven billion, eight hundred seventy-two million, four hundred fifty-six thousand, eight hundred seventeen".