243055523147 has 2 divisors, whose sum is σ = 243055523148. Its totient is φ = 243055523146.

The previous prime is 243055523119. The next prime is 243055523197. The reversal of 243055523147 is 741325550342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243055523147 - 2¹² = 243055519051 is a prime.

It is not a weakly prime, because it can be changed into another prime (243055523197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121527761573 + 121527761574.

It is an arithmetic number, because the mean of its divisors is an integer number (121527761574).

Almost surely, 2^243055523147 is an apocalyptic number.

243055523147 is a deficient number, since it is larger than the sum of its proper divisors (1).

243055523147 is an equidigital number, since it uses as much as digits as its factorization.

243055523147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 41.

The spelling of 243055523147 in words is "two hundred forty-three billion, fifty-five million, five hundred twenty-three thousand, one hundred forty-seven".