4221851056434 has 64 divisors (see below), whose sum is σ = 10452552007680. Its totient is φ = 1252128609360.

The previous prime is 4221851056417. The next prime is 4221851056469. The reversal of 4221851056434 is 4346501581224.

4221851056434 is a `hidden beast` number, since 4 + 2 + 2 + 1 + 8 + 51 + 0 + 564 + 34 = 666.

It is a super-3 number, since 3×4221851056434³ (a number of 39 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4221851056434.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75583714 + ... + 75639549.

It is an arithmetic number, because the mean of its divisors is an integer number (163321125120).

Almost surely, 2^{4221851056434} is an apocalyptic number.

4221851056434 is an abundant number, since it is smaller than the sum of its proper divisors (6230700951246).

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

4221851056434 is a wasteful number, since it uses less digits than its factorization.

4221851056434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151223332 (or 151223326 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 4221851056434 in words is "four trillion, two hundred twenty-one billion, eight hundred fifty-one million, fifty-six thousand, four hundred thirty-four".