1306445562421 has 8 divisors (see below), whose sum is σ = 1375225386080. Its totient is φ = 1237667691888.

The previous prime is 1306445562413. The next prime is 1306445562467. The reversal of 1306445562421 is 1242655446031.

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 1306445562421 - 2³ = 1306445562413 is a prime.

It is a super-3 number, since 3×1306445562421³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306445562481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001275 + ... + 1901431.

It is an arithmetic number, because the mean of its divisors is an integer number (171903173260).

Almost surely, 2^{1306445562421} is an apocalyptic number.

It is an amenable number.

1306445562421 is a deficient number, since it is larger than the sum of its proper divisors (68779823659).

1306445562421 is an equidigital number, since it uses as much as digits as its factorization.

1306445562421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976563.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 1306445562421 in words is "one trillion, three hundred six billion, four hundred forty-five million, five hundred sixty-two thousand, four hundred twenty-one".