5155199965 has 4 divisors (see below), whose sum is σ = 6186239964. Its totient is φ = 4124159968.

The previous prime is 5155199941. The next prime is 5155199971. The reversal of 5155199965 is 5699915515.

5155199965 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1433833956 + 3721366009 = 37866^2 + 61003^2 .

It is a cyclic number.

It is not a de Polignac number, because 5155199965 - 2²³ = 5146811357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515519992 + ... + 515520001.

It is an arithmetic number, because the mean of its divisors is an integer number (1546559991).

Almost surely, 2^5155199965 is an apocalyptic number.

It is an amenable number.

5155199965 is a deficient number, since it is larger than the sum of its proper divisors (1031039999).

5155199965 is a wasteful number, since it uses less digits than its factorization.

5155199965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031039998.

The product of its digits is 2733750, while the sum is 55.

The square root of 5155199965 is about 71799.7212041941. The cubic root of 5155199965 is about 1727.4885278443.

It can be divided in two parts, 5155 and 199965, that added together give a triangular number (205120 = T₆₄₀).

The spelling of 5155199965 in words is "five billion, one hundred fifty-five million, one hundred ninety-nine thousand, nine hundred sixty-five".