243101250561 has 32 divisors (see below), whose sum is σ = 355540832640. Its totient is φ = 146834841600.

The previous prime is 243101250529. The next prime is 243101250577. The reversal of 243101250561 is 165052101342.

It is not a de Polignac number, because 243101250561 - 2⁵ = 243101250529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243101250361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1392531 + ... + 1557351.

It is an arithmetic number, because the mean of its divisors is an integer number (11110651020).

Almost surely, 2^243101250561 is an apocalyptic number.

It is an amenable number.

243101250561 is a deficient number, since it is larger than the sum of its proper divisors (112439582079).

243101250561 is a wasteful number, since it uses less digits than its factorization.

243101250561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165537.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 243101250561 in words is "two hundred forty-three billion, one hundred one million, two hundred fifty thousand, five hundred sixty-one".