2643995995 has 8 divisors (see below), whose sum is σ = 3181940784. Its totient is φ = 2109099744.

The previous prime is 2643995993. The next prime is 2643996013. The reversal of 2643995995 is 5995993462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2643995995 - 2¹ = 2643995993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643995993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760224 + ... + 763693.

It is an arithmetic number, because the mean of its divisors is an integer number (397742598).

Almost surely, 2^2643995995 is an apocalyptic number.

2643995995 is a deficient number, since it is larger than the sum of its proper divisors (537944789).

2643995995 is a wasteful number, since it uses less digits than its factorization.

2643995995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524269.

The product of its digits is 23619600, while the sum is 61.

The square root of 2643995995 is about 51419.8015846036. The cubic root of 2643995995 is about 1382.7816181202.

The spelling of 2643995995 in words is "two billion, six hundred forty-three million, nine hundred ninety-five thousand, nine hundred ninety-five".