243455141551 has 2 divisors, whose sum is σ = 243455141552. Its totient is φ = 243455141550.

The previous prime is 243455141507. The next prime is 243455141593. The reversal of 243455141551 is 155141554342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243455141551 - 2³³ = 234865206959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243455141651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121727570775 + 121727570776.

It is an arithmetic number, because the mean of its divisors is an integer number (121727570776).

Almost surely, 2^243455141551 is an apocalyptic number.

243455141551 is a deficient number, since it is larger than the sum of its proper divisors (1).

243455141551 is an equidigital number, since it uses as much as digits as its factorization.

243455141551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240000, while the sum is 40.

Adding to 243455141551 its reverse (155141554342), we get a palindrome (398596695893).

The spelling of 243455141551 in words is "two hundred forty-three billion, four hundred fifty-five million, one hundred forty-one thousand, five hundred fifty-one".