4221871786464 has 96 divisors (see below), whose sum is σ = 11126581200000. Its totient is φ = 1401684801024.

The previous prime is 4221871786411. The next prime is 4221871786549. The reversal of 4221871786464 is 4646871781224.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 4221871786398 and 4221871786407.

It is a congruent number.

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, 106865787 + ... + 106905285.

It is an arithmetic number, because the mean of its divisors is an integer number (115901887500).

Almost surely, 2^{4221871786464} is an apocalyptic number.

It is an amenable number.

4221871786464 is an abundant number, since it is smaller than the sum of its proper divisors (6904709413536).

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

4221871786464 is a wasteful number, since it uses less digits than its factorization.

4221871786464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43920 (or 43912 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 60.

The spelling of 4221871786464 in words is "four trillion, two hundred twenty-one billion, eight hundred seventy-one million, seven hundred eighty-six thousand, four hundred sixty-four".