243245510155 has 8 divisors (see below), whose sum is σ = 292677173712. Its totient is φ = 194074700448.

The previous prime is 243245510117. The next prime is 243245510159. The reversal of 243245510155 is 551015542342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243245510155 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243245510159) 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, 65211409 + ... + 65215138.

It is an arithmetic number, because the mean of its divisors is an integer number (36584646714).

Almost surely, 2^243245510155 is an apocalyptic number.

243245510155 is a deficient number, since it is larger than the sum of its proper divisors (49431663557).

243245510155 is a wasteful number, since it uses less digits than its factorization.

243245510155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130426925.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 243245510155 in words is "two hundred forty-three billion, two hundred forty-five million, five hundred ten thousand, one hundred fifty-five".