273845899216655 has 4 divisors (see below), whose sum is σ = 328615079059992. Its totient is φ = 219076719373320.

The previous prime is 273845899216607. The next prime is 273845899216663. The reversal of 273845899216655 is 556612998548372.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-273845899216655 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 273845899216655.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 27384589921661 + ... + 27384589921670.

It is an arithmetic number, because the mean of its divisors is an integer number (82153769764998).

Almost surely, 2^{273845899216655} is an apocalyptic number.

273845899216655 is a deficient number, since it is larger than the sum of its proper divisors (54769179843337).

273845899216655 is an equidigital number, since it uses as much as digits as its factorization.

273845899216655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54769179843336.

The product of its digits is 7838208000, while the sum is 80.

The spelling of 273845899216655 in words is "two hundred seventy-three trillion, eight hundred forty-five billion, eight hundred ninety-nine million, two hundred sixteen thousand, six hundred fifty-five".