2682121278643 has 4 divisors (see below), whose sum is σ = 2701417115320. Its totient is φ = 2662825441968.

The previous prime is 2682121278631. The next prime is 2682121278671. The reversal of 2682121278643 is 3468721212862.

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

It is a cyclic number.

It is not a de Polignac number, because 2682121278643 - 2³³ = 2673531344051 is a prime.

It is a super-2 number, since 2×2682121278643² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2682121248643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9647918130 + ... + 9647918407.

It is an arithmetic number, because the mean of its divisors is an integer number (675354278830).

Almost surely, 2^{2682121278643} is an apocalyptic number.

2682121278643 is a deficient number, since it is larger than the sum of its proper divisors (19295836677).

2682121278643 is a wasteful number, since it uses less digits than its factorization.

2682121278643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19295836676.

The product of its digits is 3096576, while the sum is 52.

The spelling of 2682121278643 in words is "two trillion, six hundred eighty-two billion, one hundred twenty-one million, two hundred seventy-eight thousand, six hundred forty-three".