13873861577 has 4 divisors (see below), whose sum is σ = 13874566596. Its totient is φ = 13873156560.

The previous prime is 13873861559. The next prime is 13873861607. The reversal of 13873861577 is 77516837831.

It is a happy number.

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 4791962176 + 9081899401 = 69224^2 + 95299^2 .

It is a cyclic number.

It is not a de Polignac number, because 13873861577 - 2⁸ = 13873861321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13873861537) 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, 322118 + ... + 362639.

It is an arithmetic number, because the mean of its divisors is an integer number (3468641649).

Almost surely, 2^13873861577 is an apocalyptic number.

It is an amenable number.

13873861577 is a deficient number, since it is larger than the sum of its proper divisors (705019).

13873861577 is an equidigital number, since it uses as much as digits as its factorization.

13873861577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705018.

The product of its digits is 5927040, while the sum is 56.

The spelling of 13873861577 in words is "thirteen billion, eight hundred seventy-three million, eight hundred sixty-one thousand, five hundred seventy-seven".