243122155451 has 8 divisors (see below), whose sum is σ = 278185071360. Its totient is φ = 208142034408.

The previous prime is 243122155433. The next prime is 243122155453. The reversal of 243122155451 is 154551221342.

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

It is not a de Polignac number, because 243122155451 - 2¹⁴ = 243122139067 is a prime.

It is a super-2 number, since 2×243122155451² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243122155453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20692421 + ... + 20704166.

It is an arithmetic number, because the mean of its divisors is an integer number (34773133920).

Almost surely, 2^243122155451 is an apocalyptic number.

243122155451 is a deficient number, since it is larger than the sum of its proper divisors (35062915909).

243122155451 is an equidigital number, since it uses as much as digits as its factorization.

243122155451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41397433.

The product of its digits is 48000, while the sum is 35.

Adding to 243122155451 its reverse (154551221342), we get a palindrome (397673376793).

The spelling of 243122155451 in words is "two hundred forty-three billion, one hundred twenty-two million, one hundred fifty-five thousand, four hundred fifty-one".