2649599999 has 4 divisors (see below), whose sum is σ = 2649785160. Its totient is φ = 2649414840.

The previous prime is 2649599987. The next prime is 2649600029. The reversal of 2649599999 is 9999959462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9999959462 = 2 ⋅4999979731.

It is a cyclic number.

It is not a de Polignac number, because 2649599999 - 2¹⁶ = 2649534463 is a prime.

It is a Duffinian number.

2649599999 is a modest number, since divided by 99999 gives 26495 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649599399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69137 + ... + 100394.

It is an arithmetic number, because the mean of its divisors is an integer number (662446290).

Almost surely, 2^2649599999 is an apocalyptic number.

2649599999 is a deficient number, since it is larger than the sum of its proper divisors (185161).

2649599999 is a wasteful number, since it uses less digits than its factorization.

2649599999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185160.

The product of its digits is 127545840, while the sum is 71.

The square root of 2649599999 is about 51474.2654051517. The cubic root of 2649599999 is about 1383.7578734258.

The spelling of 2649599999 in words is "two billion, six hundred forty-nine million, five hundred ninety-nine thousand, nine hundred ninety-nine".