243896946745920 has 336 divisors, whose sum is σ = 882654782149440. Its totient is φ = 56876372287488.

The previous prime is 243896946745909. The next prime is 243896946745951. The reversal of 243896946745920 is 29547649698342.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36478219 + ... + 42643338.

Almost surely, 2^{243896946745920} is an apocalyptic number.

243896946745920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243896946745920 is an abundant number, since it is smaller than the sum of its proper divisors (638757835403520).

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

243896946745920 is a wasteful number, since it uses less digits than its factorization.

243896946745920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79121622 (or 79121599 counting only the distinct ones).

The product of its (nonzero) digits is 5643509760, while the sum is 78.

The spelling of 243896946745920 in words is "two hundred forty-three trillion, eight hundred ninety-six billion, nine hundred forty-six million, seven hundred forty-five thousand, nine hundred twenty".