3215784240868 has 24 divisors (see below), whose sum is σ = 5812349264568. Its totient is φ = 1555944189696.

The previous prime is 3215784240857. The next prime is 3215784240887. The reversal of 3215784240868 is 8680424875123.

It can be written as a sum of positive squares in 4 ways, for example, as 688040388324 + 2527743852544 = 829482^2 + 1589888^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103880371 + ... + 103911322.

It is an arithmetic number, because the mean of its divisors is an integer number (242181219357).

Almost surely, 2^{3215784240868} is an apocalyptic number.

It is an amenable number.

3215784240868 is a deficient number, since it is larger than the sum of its proper divisors (2596565023700).

3215784240868 is a wasteful number, since it uses less digits than its factorization.

3215784240868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207791823 (or 207791821 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 58.

The spelling of 3215784240868 in words is "three trillion, two hundred fifteen billion, seven hundred eighty-four million, two hundred forty thousand, eight hundred sixty-eight".