273261320421 has 8 divisors (see below), whose sum is σ = 383524660320. Its totient is φ = 172586097072.

The previous prime is 273261320417. The next prime is 273261320429. The reversal of 273261320421 is 124023162372.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 273261320421 - 2² = 273261320417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273261320429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397029070 + ... + 2397029183.

It is an arithmetic number, because the mean of its divisors is an integer number (47940582540).

Almost surely, 2^273261320421 is an apocalyptic number.

It is an amenable number.

273261320421 is a deficient number, since it is larger than the sum of its proper divisors (110263339899).

273261320421 is a wasteful number, since it uses less digits than its factorization.

273261320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794058275.

The product of its (nonzero) digits is 24192, while the sum is 33.

Adding to 273261320421 its reverse (124023162372), we get a palindrome (397284482793).

The spelling of 273261320421 in words is "two hundred seventy-three billion, two hundred sixty-one million, three hundred twenty thousand, four hundred twenty-one".