242181188465 has 8 divisors (see below), whose sum is σ = 290629351080. Its totient is φ = 193737000832.

The previous prime is 242181188453. The next prime is 242181188497. The reversal of 242181188465 is 564881181242.

It can be written as a sum of positive squares in 4 ways, for example, as 141640827904 + 100540360561 = 376352^2 + 317081^2 .

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 242181188465 - 2¹² = 242181184369 is a prime.

It is a super-3 number, since 3×242181188465³ (a number of 35 digits) contains 333 as substring.

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, 858020 + ... + 1104789.

It is an arithmetic number, because the mean of its divisors is an integer number (36328668885).

Almost surely, 2^242181188465 is an apocalyptic number.

It is an amenable number.

242181188465 is a deficient number, since it is larger than the sum of its proper divisors (48448162615).

242181188465 is a wasteful number, since it uses less digits than its factorization.

242181188465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987491.

The product of its digits is 983040, while the sum is 50.

The spelling of 242181188465 in words is "two hundred forty-two billion, one hundred eighty-one million, one hundred eighty-eight thousand, four hundred sixty-five".