4287732321872 has 20 divisors (see below), whose sum is σ = 8307513493440. Its totient is φ = 2143857871968.

The previous prime is 4287732321869. The next prime is 4287732321883. The reversal of 4287732321872 is 2781232377824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7698329 + ... + 8236487.

It is an arithmetic number, because the mean of its divisors is an integer number (415375674672).

Almost surely, 2^{4287732321872} is an apocalyptic number.

It is an amenable number.

4287732321872 is a deficient number, since it is larger than the sum of its proper divisors (4019781171568).

4287732321872 is a wasteful number, since it uses less digits than its factorization.

4287732321872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036130 (or 1036124 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 56.

The spelling of 4287732321872 in words is "four trillion, two hundred eighty-seven billion, seven hundred thirty-two million, three hundred twenty-one thousand, eight hundred seventy-two".