2663991043 has 8 divisors (see below), whose sum is σ = 3046546688. Its totient is φ = 2281931784.

The previous prime is 2663991013. The next prime is 2663991053. The reversal of 2663991043 is 3401993662.

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 2663991043 - 2¹³ = 2663982851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2663991013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112521 + ... + 134122.

It is an arithmetic number, because the mean of its divisors is an integer number (380818336).

Almost surely, 2^2663991043 is an apocalyptic number.

2663991043 is a deficient number, since it is larger than the sum of its proper divisors (382555645).

2663991043 is a wasteful number, since it uses less digits than its factorization.

2663991043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248193.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 2663991043 is about 51613.8648330078. The cubic root of 2663991043 is about 1386.2586000389.

The spelling of 2663991043 in words is "two billion, six hundred sixty-three million, nine hundred ninety-one thousand, forty-three".