2268759472549 has 4 divisors (see below), whose sum is σ = 2269560308236. Its totient is φ = 2267958636864.

The previous prime is 2268759472541. The next prime is 2268759472559. The reversal of 2268759472549 is 9452749578622.

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 696198328225 + 1572561144324 = 834385^2 + 1254018^2 .

It is a cyclic number.

It is not a de Polignac number, because 2268759472549 - 2³ = 2268759472541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2268759472541) 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, 400413594 + ... + 400419259.

It is an arithmetic number, because the mean of its divisors is an integer number (567390077059).

Almost surely, 2^{2268759472549} is an apocalyptic number.

It is an amenable number.

2268759472549 is a deficient number, since it is larger than the sum of its proper divisors (800835687).

2268759472549 is an equidigital number, since it uses as much as digits as its factorization.

2268759472549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800835686.

The product of its digits is 609638400, while the sum is 70.

The spelling of 2268759472549 in words is "two trillion, two hundred sixty-eight billion, seven hundred fifty-nine million, four hundred seventy-two thousand, five hundred forty-nine".