243252250155 has 12 divisors (see below), whose sum is σ = 421637233680. Its totient is φ = 129734533392.

The previous prime is 243252250127. The next prime is 243252250243. The reversal of 243252250155 is 551052252342.

243252250155 is a `hidden beast` number, since 2 + 4 + 3 + 252 + 250 + 155 = 666.

It is not a de Polignac number, because 243252250155 - 2⁶ = 243252250091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2702802735 + ... + 2702802824.

It is an arithmetic number, because the mean of its divisors is an integer number (35136436140).

Almost surely, 2^243252250155 is an apocalyptic number.

243252250155 is a deficient number, since it is larger than the sum of its proper divisors (178384983525).

243252250155 is a wasteful number, since it uses less digits than its factorization.

243252250155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5405605570 (or 5405605567 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 243252250155 in words is "two hundred forty-three billion, two hundred fifty-two million, two hundred fifty thousand, one hundred fifty-five".