4221855015784 has 64 divisors (see below), whose sum is σ = 9102026995200. Its totient is φ = 1798350724800.

The previous prime is 4221855015757. The next prime is 4221855015827. The reversal of 4221855015784 is 4875105581224.

It is a super-5 number, since 5×4221855015784⁵ (a number of 64 digits) contains 55555 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8490279 + ... + 8973769.

It is an arithmetic number, because the mean of its divisors is an integer number (142219171800).

Almost surely, 2^{4221855015784} is an apocalyptic number.

It is an amenable number.

4221855015784 is an abundant number, since it is smaller than the sum of its proper divisors (4880171979416).

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

4221855015784 is a wasteful number, since it uses less digits than its factorization.

4221855015784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484454 (or 484450 counting only the distinct ones).

The product of its (nonzero) digits is 3584000, while the sum is 52.

The spelling of 4221855015784 in words is "four trillion, two hundred twenty-one billion, eight hundred fifty-five million, fifteen thousand, seven hundred eighty-four".