243115553011 has 16 divisors (see below), whose sum is σ = 259503022080. Its totient is φ = 226960755840.

The previous prime is 243115552997. The next prime is 243115553017. The reversal of 243115553011 is 110355511342.

It is a cyclic number.

It is not a de Polignac number, because 243115553011 - 2²¹ = 243113455859 is a prime.

It is a super-2 number, since 2×243115553011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243115553017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11931250 + ... + 11951608.

It is an arithmetic number, because the mean of its divisors is an integer number (16218938880).

Almost surely, 2^243115553011 is an apocalyptic number.

243115553011 is a deficient number, since it is larger than the sum of its proper divisors (16387469069).

243115553011 is a wasteful number, since it uses less digits than its factorization.

243115553011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26034.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 243115553011 in words is "two hundred forty-three billion, one hundred fifteen million, five hundred fifty-three thousand, eleven".