243605373277153 has 2 divisors, whose sum is σ = 243605373277154. Its totient is φ = 243605373277152.

The previous prime is 243605373277117. The next prime is 243605373277237. The reversal of 243605373277153 is 351772373506342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188382981671824 + 55222391605329 = 13725268^2 + 7431177^2 .

It is a cyclic number.

It is not a de Polignac number, because 243605373277153 - 2⁹ = 243605373276641 is a prime.

It is a super-3 number, since 3×243605373277153³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (243605373277753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121802686638576 + 121802686638577.

It is an arithmetic number, because the mean of its divisors is an integer number (121802686638577).

Almost surely, 2^{243605373277153} is an apocalyptic number.

It is an amenable number.

243605373277153 is a deficient number, since it is larger than the sum of its proper divisors (1).

243605373277153 is an equidigital number, since it uses as much as digits as its factorization.

243605373277153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66679200, while the sum is 58.

The spelling of 243605373277153 in words is "two hundred forty-three trillion, six hundred five billion, three hundred seventy-three million, two hundred seventy-seven thousand, one hundred fifty-three".