243100400015 has 12 divisors (see below), whose sum is σ = 320651437512. Its totient is φ = 176800290480.

The previous prime is 243100399979. The next prime is 243100400047. The reversal of 243100400015 is 510004001342.

It is not a de Polignac number, because 243100400015 - 2¹⁸ = 243100137871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243100400015.

It is a congruent number.

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, 200908817 + ... + 200910026.

It is an arithmetic number, because the mean of its divisors is an integer number (26720953126).

Almost surely, 2^243100400015 is an apocalyptic number.

243100400015 is a deficient number, since it is larger than the sum of its proper divisors (77551037497).

243100400015 is a wasteful number, since it uses less digits than its factorization.

243100400015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401818870 (or 401818859 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 243100400015 its reverse (510004001342), we get a palindrome (753104401357).

The spelling of 243100400015 in words is "two hundred forty-three billion, one hundred million, four hundred thousand, fifteen".