6357221342645 has 8 divisors (see below), whose sum is σ = 7628690866104. Its totient is φ = 5085760237504.

The previous prime is 6357221342627. The next prime is 6357221342699. The reversal of 6357221342645 is 5462431227536.

It can be written as a sum of positive squares in 4 ways, for example, as 49679506321 + 6307541836324 = 222889^2 + 2511482^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6357221342645 - 2¹⁰ = 6357221341621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6357221342593 and 6357221342602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303014 + ... + 3578583.

It is an arithmetic number, because the mean of its divisors is an integer number (953586358263).

Almost surely, 2^{6357221342645} is an apocalyptic number.

It is an amenable number.

6357221342645 is a deficient number, since it is larger than the sum of its proper divisors (1271469523459).

6357221342645 is a wasteful number, since it uses less digits than its factorization.

6357221342645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209159.

The product of its digits is 7257600, while the sum is 50.

The spelling of 6357221342645 in words is "six trillion, three hundred fifty-seven billion, two hundred twenty-one million, three hundred forty-two thousand, six hundred forty-five".