287945172964 has 24 divisors (see below), whose sum is σ = 517589813888. Its totient is φ = 140063372640.

The previous prime is 287945172961. The next prime is 287945172989. The reversal of 287945172964 is 469271549782.

It is a junction number, because it is equal to n+sod(n) for n = 287945172896 and 287945172905.

It is not an unprimeable number, because it can be changed into a prime (287945172961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064197 + ... + 1307059.

Almost surely, 2^287945172964 is an apocalyptic number.

It is an amenable number.

287945172964 is a deficient number, since it is larger than the sum of its proper divisors (229644640924).

287945172964 is a wasteful number, since it uses less digits than its factorization.

287945172964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250915 (or 250913 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 64.

The spelling of 287945172964 in words is "two hundred eighty-seven billion, nine hundred forty-five million, one hundred seventy-two thousand, nine hundred sixty-four".