243155055445 has 8 divisors (see below), whose sum is σ = 292581126144. Its totient is φ = 193994004624.

The previous prime is 243155055419. The next prime is 243155055487. The reversal of 243155055445 is 544550551342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243155055445 - 2²³ = 243146666837 is a prime.

It is a super-2 number, since 2×243155055445² (a number of 24 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 66252949 + ... + 66256618.

It is an arithmetic number, because the mean of its divisors is an integer number (36572640768).

Almost surely, 2^243155055445 is an apocalyptic number.

It is an amenable number.

243155055445 is a deficient number, since it is larger than the sum of its proper divisors (49426070699).

243155055445 is a wasteful number, since it uses less digits than its factorization.

243155055445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132509939.

The product of its (nonzero) digits is 1200000, while the sum is 43.

The spelling of 243155055445 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-five thousand, four hundred forty-five".