4221772997456 has 40 divisors (see below), whose sum is σ = 9348682372224. Its totient is φ = 1809240174720.

The previous prime is 4221772997441. The next prime is 4221772997501. The reversal of 4221772997456 is 6547992771224.

It is a junction number, because it is equal to n+sod(n) for n = 4221772997392 and 4221772997401.

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 7 ways as a sum of consecutive naturals, for example, 1308926 + ... + 3186978.

Almost surely, 2^{4221772997456} is an apocalyptic number.

It is an amenable number.

4221772997456 is an abundant number, since it is smaller than the sum of its proper divisors (5126909374768).

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

4221772997456 is a wasteful number, since it uses less digits than its factorization.

4221772997456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898139 (or 1898133 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 65.

The spelling of 4221772997456 in words is "four trillion, two hundred twenty-one billion, seven hundred seventy-two million, nine hundred ninety-seven thousand, four hundred fifty-six".