242442644686401 has 4 divisors (see below), whose sum is σ = 323256859581872. Its totient is φ = 161628429790932.

The previous prime is 242442644686397. The next prime is 242442644686469. The reversal of 242442644686401 is 104686446244242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 242442644686401 - 2² = 242442644686397 is a prime.

It is a super-3 number, since 3×242442644686401³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242442644686471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40407107447731 + ... + 40407107447736.

It is an arithmetic number, because the mean of its divisors is an integer number (80814214895468).

Almost surely, 2^{242442644686401} is an apocalyptic number.

It is an amenable number.

242442644686401 is a deficient number, since it is larger than the sum of its proper divisors (80814214895471).

242442644686401 is an equidigital number, since it uses as much as digits as its factorization.

242442644686401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80814214895470.

The product of its (nonzero) digits is 56623104, while the sum is 57.

The spelling of 242442644686401 in words is "two hundred forty-two trillion, four hundred forty-two billion, six hundred forty-four million, six hundred eighty-six thousand, four hundred one".