243155055430 has 24 divisors (see below), whose sum is σ = 509136913008. Its totient is φ = 83367447408.

The previous prime is 243155055419. The next prime is 243155055487. The reversal of 243155055430 is 34550551342.

It is a self number, because there is not a number n which added to its sum of digits gives 243155055430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248116914 + ... + 248117893.

It is an arithmetic number, because the mean of its divisors is an integer number (21214038042).

Almost surely, 2^243155055430 is an apocalyptic number.

243155055430 is an abundant number, since it is smaller than the sum of its proper divisors (265981857578).

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

243155055430 is a wasteful number, since it uses less digits than its factorization.

243155055430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496234828 (or 496234821 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 243155055430 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-five thousand, four hundred thirty".