243213416807 has 4 divisors (see below), whose sum is σ = 243215324760. Its totient is φ = 243211508856.

The previous prime is 243213416791. The next prime is 243213416819. The reversal of 243213416807 is 708614312342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708614312342 = 2 ⋅354307156171.

It is a cyclic number.

It is not a de Polignac number, because 243213416807 - 2⁴ = 243213416791 is a prime.

It is a super-2 number, since 2×243213416807² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243213416857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747932 + ... + 1022657.

It is an arithmetic number, because the mean of its divisors is an integer number (60803831190).

Almost surely, 2^243213416807 is an apocalyptic number.

243213416807 is a deficient number, since it is larger than the sum of its proper divisors (1907953).

243213416807 is a wasteful number, since it uses less digits than its factorization.

243213416807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907952.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 243213416807 in words is "two hundred forty-three billion, two hundred thirteen million, four hundred sixteen thousand, eight hundred seven".