365439981313 has 32 divisors (see below), whose sum is σ = 444958704000. Its totient is φ = 295799454720.

The previous prime is 365439981299. The next prime is 365439981397. The reversal of 365439981313 is 313189934563.

It is not a de Polignac number, because 365439981313 - 2⁵ = 365439981281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (365439901313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2446543 + ... + 2591611.

It is an arithmetic number, because the mean of its divisors is an integer number (13904959500).

Almost surely, 2^365439981313 is an apocalyptic number.

It is an amenable number.

365439981313 is a deficient number, since it is larger than the sum of its proper divisors (79518722687).

365439981313 is a wasteful number, since it uses less digits than its factorization.

365439981313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145825.

The product of its digits is 6298560, while the sum is 55.

The spelling of 365439981313 in words is "three hundred sixty-five billion, four hundred thirty-nine million, nine hundred eighty-one thousand, three hundred thirteen".