243225407076720 has 80 divisors (see below), whose sum is σ = 754759609055232. Its totient is φ = 64794659339520.

The previous prime is 243225407076719. The next prime is 243225407076721. The reversal of 243225407076720 is 27670704522342.

It is an interprime number because it is at equal distance from previous prime (243225407076719) and next prime (243225407076721).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243225407076721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511083652 + ... + 511559331.

Almost surely, 2^{243225407076720} is an apocalyptic number.

243225407076720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243225407076720 is an abundant number, since it is smaller than the sum of its proper divisors (511534201978512).

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

243225407076720 is a wasteful number, since it uses less digits than its factorization.

243225407076720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022643990 (or 1022643984 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 51.

The spelling of 243225407076720 in words is "two hundred forty-three trillion, two hundred twenty-five billion, four hundred seven million, seventy-six thousand, seven hundred twenty".