1305641620319 has 2 divisors, whose sum is σ = 1305641620320. Its totient is φ = 1305641620318.

The previous prime is 1305641620307. The next prime is 1305641620453. The reversal of 1305641620319 is 9130261465031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1305641620319 - 2⁴ = 1305641620303 is a prime.

It is a super-2 number, since 2×1305641620319² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305641610319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652820810159 + 652820810160.

It is an arithmetic number, because the mean of its divisors is an integer number (652820810160).

Almost surely, 2^{1305641620319} is an apocalyptic number.

1305641620319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305641620319 is an equidigital number, since it uses as much as digits as its factorization.

1305641620319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 1305641620319 in words is "one trillion, three hundred five billion, six hundred forty-one million, six hundred twenty thousand, three hundred nineteen".