3221572343557 has 4 divisors (see below), whose sum is σ = 3221979784416. Its totient is φ = 3221164902700.

The previous prime is 3221572343533. The next prime is 3221572343567. The reversal of 3221572343557 is 7553432751223.

3221572343557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3221572343557 - 2¹¹ = 3221572341509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221572343557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221572343567) 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, 203708569 + ... + 203724382.

It is an arithmetic number, because the mean of its divisors is an integer number (805494946104).

Almost surely, 2^{3221572343557} is an apocalyptic number.

It is an amenable number.

3221572343557 is a deficient number, since it is larger than the sum of its proper divisors (407440859).

3221572343557 is an equidigital number, since it uses as much as digits as its factorization.

3221572343557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407440858.

The product of its digits is 5292000, while the sum is 49.

The spelling of 3221572343557 in words is "three trillion, two hundred twenty-one billion, five hundred seventy-two million, three hundred forty-three thousand, five hundred fifty-seven".