243354579422520 has 128 divisors (see below), whose sum is σ = 768501490348800. Its totient is φ = 61477984060416.

The previous prime is 243354579422467. The next prime is 243354579422561. The reversal of 243354579422520 is 25224975453342.

243354579422520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134756187 + ... + 136550133.

It is an arithmetic number, because the mean of its divisors is an integer number (6003917893350).

Almost surely, 2^{243354579422520} is an apocalyptic number.

243354579422520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243354579422520 is an abundant number, since it is smaller than the sum of its proper divisors (525146910926280).

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

243354579422520 is a wasteful number, since it uses less digits than its factorization.

243354579422520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853477 (or 1853473 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 57.

The spelling of 243354579422520 in words is "two hundred forty-three trillion, three hundred fifty-four billion, five hundred seventy-nine million, four hundred twenty-two thousand, five hundred twenty".