243105551299 has 16 divisors (see below), whose sum is σ = 277223712192. Its totient is φ = 211191579648.

The previous prime is 243105551287. The next prime is 243105551371. The reversal of 243105551299 is 992155501342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243105551299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243105551219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5510322 + ... + 5554264.

It is an arithmetic number, because the mean of its divisors is an integer number (17326482012).

Almost surely, 2^243105551299 is an apocalyptic number.

243105551299 is a deficient number, since it is larger than the sum of its proper divisors (34118160893).

243105551299 is a wasteful number, since it uses less digits than its factorization.

243105551299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69006.

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 243105551299 in words is "two hundred forty-three billion, one hundred five million, five hundred fifty-one thousand, two hundred ninety-nine".