243305552455 has 16 divisors (see below), whose sum is σ = 333700409664. Its totient is φ = 166825981440.

The previous prime is 243305552449. The next prime is 243305552471. The reversal of 243305552455 is 554255503342.

It is not a de Polignac number, because 243305552455 - 2¹⁵ = 243305519687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250815 + ... + 741295.

It is an arithmetic number, because the mean of its divisors is an integer number (20856275604).

Almost surely, 2^243305552455 is an apocalyptic number.

243305552455 is a deficient number, since it is larger than the sum of its proper divisors (90394857209).

243305552455 is a wasteful number, since it uses less digits than its factorization.

243305552455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504666.

The product of its (nonzero) digits is 1800000, while the sum is 43.

The spelling of 243305552455 in words is "two hundred forty-three billion, three hundred five million, five hundred fifty-two thousand, four hundred fifty-five".