2640959999999 has 4 divisors (see below), whose sum is σ = 2652010042080. Its totient is φ = 2629909957920.

The previous prime is 2640959999983. The next prime is 2640960000043. The reversal of 2640959999999 is 9999999590462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2640959999999 - 2⁴ = 2640959999983 is a prime.

It is a Duffinian number.

2640959999999 is a modest number, since divided by 9999999 gives 264095 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640959999099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525020682 + ... + 5525021159.

It is an arithmetic number, because the mean of its divisors is an integer number (663002510520).

Almost surely, 2^{2640959999999} is an apocalyptic number.

2640959999999 is a deficient number, since it is larger than the sum of its proper divisors (11050042081).

2640959999999 is a wasteful number, since it uses less digits than its factorization.

2640959999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050042080.

The product of its (nonzero) digits is 10331213040, while the sum is 89.

The spelling of 2640959999999 in words is "two trillion, six hundred forty billion, nine hundred fifty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".