273434872657 has 4 divisors (see below), whose sum is σ = 273996341056. Its totient is φ = 272873404260.

The previous prime is 273434872637. The next prime is 273434872723. The reversal of 273434872657 is 756278434372.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273434872657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (273434872637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280733469 + ... + 280734442.

It is an arithmetic number, because the mean of its divisors is an integer number (68499085264).

Almost surely, 2^273434872657 is an apocalyptic number.

It is an amenable number.

273434872657 is a deficient number, since it is larger than the sum of its proper divisors (561468399).

273434872657 is an equidigital number, since it uses as much as digits as its factorization.

273434872657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561468398.

The product of its digits is 47416320, while the sum is 58.

The spelling of 273434872657 in words is "two hundred seventy-three billion, four hundred thirty-four million, eight hundred seventy-two thousand, six hundred fifty-seven".