243661016151 has 18 divisors (see below), whose sum is σ = 409416810192. Its totient is φ = 139234866120.

The previous prime is 243661016089. The next prime is 243661016161. The reversal of 243661016151 is 151610166342.

243661016151 is a `hidden beast` number, since 2 + 4 + 36 + 6 + 1 + 0 + 1 + 615 + 1 = 666.

243661016151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243661016151 - 2¹³ = 243661007959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243661016161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 276259215 + ... + 276260096.

It is an arithmetic number, because the mean of its divisors is an integer number (22745378344).

Almost surely, 2^243661016151 is an apocalyptic number.

243661016151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243661016151 is a deficient number, since it is larger than the sum of its proper divisors (165755794041).

243661016151 is a wasteful number, since it uses less digits than its factorization.

243661016151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552519331 (or 552519321 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 243661016151 in words is "two hundred forty-three billion, six hundred sixty-one million, sixteen thousand, one hundred fifty-one".