243213523472736 has 120 divisors (see below), whose sum is σ = 727010187838704. Its totient is φ = 79742138791680.

The previous prime is 243213523472681. The next prime is 243213523472741. The reversal of 243213523472736 is 637274325312342.

243213523472736 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 1 + 3 + 523 + 47 + 2 + 73 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 768959740 + ... + 769275963.

Almost surely, 2^{243213523472736} is an apocalyptic number.

It is an amenable number.

243213523472736 is an abundant number, since it is smaller than the sum of its proper divisors (483796664365968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243213523472736 is a wasteful number, since it uses less digits than its factorization.

243213523472736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538235786 (or 1538235769 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 54.

The spelling of 243213523472736 in words is "two hundred forty-three trillion, two hundred thirteen billion, five hundred twenty-three million, four hundred seventy-two thousand, seven hundred thirty-six".