243120100051 has 8 divisors (see below), whose sum is σ = 244428229584. Its totient is φ = 241812718560.

The previous prime is 243120100039. The next prime is 243120100121. The reversal of 243120100051 is 150001021342.

243120100051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243120100051 - 2²¹ = 243118002899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243120106051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470961 + ... + 841453.

It is an arithmetic number, because the mean of its divisors is an integer number (30553528698).

Almost surely, 2^243120100051 is an apocalyptic number.

243120100051 is a deficient number, since it is larger than the sum of its proper divisors (1308129533).

243120100051 is a wasteful number, since it uses less digits than its factorization.

243120100051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374021.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 243120100051 its reverse (150001021342), we get a palindrome (393121121393).

The spelling of 243120100051 in words is "two hundred forty-three billion, one hundred twenty million, one hundred thousand, fifty-one".