243001155005 has 24 divisors (see below), whose sum is σ = 339965407800. Its totient is φ = 166258176000.

The previous prime is 243001154989. The next prime is 243001155029. The reversal of 243001155005 is 500551100342.

It can be written as a sum of positive squares in 4 ways, for example, as 41876711044 + 201124443961 = 204638^2 + 448469^2 .

It is not a de Polignac number, because 243001155005 - 2⁴ = 243001154989 is a prime.

It is a super-2 number, since 2×243001155005² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 994496 + ... + 1214505.

It is an arithmetic number, because the mean of its divisors is an integer number (14165225325).

Almost surely, 2^243001155005 is an apocalyptic number.

It is an amenable number.

243001155005 is a deficient number, since it is larger than the sum of its proper divisors (96964252795).

243001155005 is a wasteful number, since it uses less digits than its factorization.

243001155005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209469 (or 2209462 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 243001155005 its reverse (500551100342), we get a palindrome (743552255347).

The spelling of 243001155005 in words is "two hundred forty-three billion, one million, one hundred fifty-five thousand, five".