1358345781777 has 4 divisors (see below), whose sum is σ = 1811127709040. Its totient is φ = 905563854516.

The previous prime is 1358345781743. The next prime is 1358345781797. The reversal of 1358345781777 is 7771875438531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1358345781777 - 2¹⁴ = 1358345765393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1358345781707) 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 3 ways as a sum of consecutive naturals, for example, 226390963627 + ... + 226390963632.

It is an arithmetic number, because the mean of its divisors is an integer number (452781927260).

Almost surely, 2^{1358345781777} is an apocalyptic number.

It is an amenable number.

1358345781777 is a deficient number, since it is larger than the sum of its proper divisors (452781927263).

1358345781777 is an equidigital number, since it uses as much as digits as its factorization.

1358345781777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452781927262.

The product of its digits is 138297600, while the sum is 66.

The spelling of 1358345781777 in words is "one trillion, three hundred fifty-eight billion, three hundred forty-five million, seven hundred eighty-one thousand, seven hundred seventy-seven".