4221557632 has 32 divisors (see below), whose sum is σ = 8775798480. Its totient is φ = 2019004416.

The previous prime is 4221557629. The next prime is 4221557633. The reversal of 4221557632 is 2367551224.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 4221557591 and 4221557600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221557633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714033 + ... + 719920.

Almost surely, 2^4221557632 is an apocalyptic number.

It is an amenable number.

4221557632 is an abundant number, since it is smaller than the sum of its proper divisors (4554240848).

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

4221557632 is a wasteful number, since it uses less digits than its factorization.

4221557632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433990 (or 1433978 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 4221557632 is about 64973.5148502834. The cubic root of 4221557632 is about 1616.1843889852.

The spelling of 4221557632 in words is "four billion, two hundred twenty-one million, five hundred fifty-seven thousand, six hundred thirty-two".