287949673567 has 4 divisors (see below), whose sum is σ = 290800660536. Its totient is φ = 285098686600.

The previous prime is 287949673537. The next prime is 287949673589. The reversal of 287949673567 is 765376949782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 765376949782 = 2 ⋅382688474891.

It is a cyclic number.

It is not a de Polignac number, because 287949673567 - 2²³ = 287941284959 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 287949673567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287949673537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425493333 + ... + 1425493534.

It is an arithmetic number, because the mean of its divisors is an integer number (72700165134).

Almost surely, 2^287949673567 is an apocalyptic number.

287949673567 is a deficient number, since it is larger than the sum of its proper divisors (2850986969).

287949673567 is a wasteful number, since it uses less digits than its factorization.

287949673567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850986968.

The product of its digits is 960180480, while the sum is 73.

The spelling of 287949673567 in words is "two hundred eighty-seven billion, nine hundred forty-nine million, six hundred seventy-three thousand, five hundred sixty-seven".