1305422216533 has 4 divisors (see below), whose sum is σ = 1382211758700. Its totient is φ = 1228632674368.

The previous prime is 1305422216503. The next prime is 1305422216543. The reversal of 1305422216533 is 3356122245031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 736426571409 + 568995645124 = 858153^2 + 754318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305422216533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1305422216492 and 1305422216501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305422216503) 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, 38394771058 + ... + 38394771091.

It is an arithmetic number, because the mean of its divisors is an integer number (345552939675).

Almost surely, 2^{1305422216533} is an apocalyptic number.

It is an amenable number.

1305422216533 is a deficient number, since it is larger than the sum of its proper divisors (76789542167).

1305422216533 is an equidigital number, since it uses as much as digits as its factorization.

1305422216533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76789542166.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 1305422216533 in words is "one trillion, three hundred five billion, four hundred twenty-two million, two hundred sixteen thousand, five hundred thirty-three".