243155035455 has 96 divisors (see below), whose sum is σ = 436251096000. Its totient is φ = 115412097024.

The previous prime is 243155035429. The next prime is 243155035507. The reversal of 243155035455 is 554530551342.

It is not a de Polignac number, because 243155035455 - 2¹⁶ = 243154969919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5789371 + ... + 5831219.

It is an arithmetic number, because the mean of its divisors is an integer number (4544282250).

Almost surely, 2^243155035455 is an apocalyptic number.

243155035455 is a deficient number, since it is larger than the sum of its proper divisors (193096060545).

243155035455 is a wasteful number, since it uses less digits than its factorization.

243155035455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41961 (or 41942 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 42.

Adding to 243155035455 its reverse (554530551342), we get a palindrome (797685586797).

The spelling of 243155035455 in words is "two hundred forty-three billion, one hundred fifty-five million, thirty-five thousand, four hundred fifty-five".