2681161254421 has 8 divisors (see below), whose sum is σ = 2887449677280. Its totient is φ = 2474879295792.

The previous prime is 2681161254403. The next prime is 2681161254449. The reversal of 2681161254421 is 1244521611862.

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

It is a cyclic number.

It is not a de Polignac number, because 2681161254421 - 2³¹ = 2679013770773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681161254491) 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, 736891 + ... + 2430088.

It is an arithmetic number, because the mean of its divisors is an integer number (360931209660).

Almost surely, 2^{2681161254421} is an apocalyptic number.

It is an amenable number.

2681161254421 is a deficient number, since it is larger than the sum of its proper divisors (206288422859).

2681161254421 is a wasteful number, since it uses less digits than its factorization.

2681161254421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232115.

The product of its digits is 184320, while the sum is 43.

The spelling of 2681161254421 in words is "two trillion, six hundred eighty-one billion, one hundred sixty-one million, two hundred fifty-four thousand, four hundred twenty-one".