287505671064 has 32 divisors (see below), whose sum is σ = 750014795520. Its totient is φ = 91668474656.

The previous prime is 287505671029. The next prime is 287505671107. The reversal of 287505671064 is 460176505782.

It is a junction number, because it is equal to n+sod(n) for n = 287505670998 and 287505671016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260421252 + ... + 260422355.

It is an arithmetic number, because the mean of its divisors is an integer number (23437962360).

Almost surely, 2^287505671064 is an apocalyptic number.

287505671064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

287505671064 is an abundant number, since it is smaller than the sum of its proper divisors (462509124456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287505671064 is a wasteful number, since it uses less digits than its factorization.

287505671064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520843639 (or 520843635 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 287505671064 in words is "two hundred eighty-seven billion, five hundred five million, six hundred seventy-one thousand, sixty-four".