243213461273451 has 32 divisors (see below), whose sum is σ = 340577003819520. Its totient is φ = 154088144964864.

The previous prime is 243213461273417. The next prime is 243213461273483. The reversal of 243213461273451 is 154372164312342.

It is not a de Polignac number, because 243213461273451 - 2⁹ = 243213461272939 is a prime.

It is a super-2 number, since 2×243213461273451² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243213461273451.

It is not an unprimeable number, because it can be changed into a prime (243213461278451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29000655 + ... + 36434391.

It is an arithmetic number, because the mean of its divisors is an integer number (10643031369360).

Almost surely, 2^{243213461273451} is an apocalyptic number.

243213461273451 is a deficient number, since it is larger than the sum of its proper divisors (97363542546069).

243213461273451 is a wasteful number, since it uses less digits than its factorization.

243213461273451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7436835.

The product of its digits is 2903040, while the sum is 48.

The spelling of 243213461273451 in words is "two hundred forty-three trillion, two hundred thirteen billion, four hundred sixty-one million, two hundred seventy-three thousand, four hundred fifty-one".