287172158667 has 48 divisors (see below), whose sum is σ = 403872268800. Its totient is φ = 181480178880.

The previous prime is 287172158659. The next prime is 287172158687. The reversal of 287172158667 is 766851271782.

It is not a de Polignac number, because 287172158667 - 2³ = 287172158659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287172158667.

It is not an unprimeable number, because it can be changed into a prime (287172158687) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200959509 + ... + 200960937.

It is an arithmetic number, because the mean of its divisors is an integer number (8414005600).

Almost surely, 2^287172158667 is an apocalyptic number.

287172158667 is a deficient number, since it is larger than the sum of its proper divisors (116700110133).

287172158667 is a wasteful number, since it uses less digits than its factorization.

287172158667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2505 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 60.

The spelling of 287172158667 in words is "two hundred eighty-seven billion, one hundred seventy-two million, one hundred fifty-eight thousand, six hundred sixty-seven".