4221621620688 has 80 divisors (see below), whose sum is σ = 10925353518336. Its totient is φ = 1404692398080.

The previous prime is 4221621620663. The next prime is 4221621620729. The reversal of 4221621620688 is 8860261261224.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 162965145 + ... + 162991047.

Almost surely, 2^{4221621620688} is an apocalyptic number.

4221621620688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4221621620688 is an abundant number, since it is smaller than the sum of its proper divisors (6703731897648).

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

4221621620688 is a wasteful number, since it uses less digits than its factorization.

4221621620688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31852 (or 31846 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 4221621620688 in words is "four trillion, two hundred twenty-one billion, six hundred twenty-one million, six hundred twenty thousand, six hundred eighty-eight".