2821048215864 has 32 divisors (see below), whose sum is σ = 7052819487120. Its totient is φ = 940322878976.

The previous prime is 2821048215859. The next prime is 2821048215871. The reversal of 2821048215864 is 4685128401282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779889 + ... + 2500064.

Almost surely, 2^{2821048215864} is an apocalyptic number.

2821048215864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2821048215864 is an abundant number, since it is smaller than the sum of its proper divisors (4231771271256).

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

2821048215864 is a wasteful number, since it uses less digits than its factorization.

2821048215864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315799 (or 3315795 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 51.

The spelling of 2821048215864 in words is "two trillion, eight hundred twenty-one billion, forty-eight million, two hundred fifteen thousand, eight hundred sixty-four".